Stargate Atlantis

Season 4 Episode 4


Aired Friday 10:00 PM Oct 19, 2007 on Syfy



  • Trivia

    • McKay: Huh! Not a night goes by! Last night I dreamed that Colonel Carter invited me to her quarters for dinner...
      Teyla: Maybe you shouldn't be telling us this, Rodney.
      Keller: Yeah, I said "nightmare," not "delusional male fantasy."
      McKay: Wait, and listen! Turns out she was serving lemon chicken. I mean, lemon! And the only reason she invited me to dinner was to tell me that she was promoting Zelenka over me.

      McKay says he had a nightmare in which Sam offers him lemon Chicken. This is a reference to the Stargate SG-1 5th season episode "48 Hours" in which Samantha Carter and Rodney McKay meet each other for the first time. They are having lunch at Stargate Command and McKay is offered lemon chicken, to which he replies he has a strong citrus allergy and could die out of ingesting lemon.

    • Goof: When Dr. Keller goes into the infirmary after her nightmare, she opens the medicine cabinet a fraction before she finishes turning the key.

    • Keller: I could give him something to keep him awake for a while, but it'll only work for so long before we start putting him at risk of pulmonary failure.
      Carter: Yeah. Believe it or not, I've been there before, too.

      This is a reference to the Stargate SG-1 episode "Morpheus."

    • Heightmeyer: I read at one point you were taken over by an alien entity?
      Carter: ... Yeah. Not a personal highlight.

      This is a reference to the Stargate SG-1 episode "Entity."

    • The rain forested planet where the crystal entity is found is designated M3X-387.

    • Sheppard: You know, this really isn't as strange as you led me to believe.
      McKay: Oh yeah? What about that?
      (Gestures behind them, where a clown is sitting in the boat)
      Sheppard: I hate clowns.

      This is the second time in the series that Sheppard's aversion to clowns has been mentioned. The first was in the second season episode "The Hive" in which he admits that clowns "scare the crap" out of him.

    • After Dr. Heightmeyer's Nightmare. We see Teyla in her quarters and Dr. Keller arrives, Teyla says she cant wake her. Dr. Keller confirms she is dead. Shouldn't Teyla be able to figure out if someone is dead? She has experienced her fair share of combat, and death.

    • The device used to allow Sheppard to enter McKay's dreams was an adapted version of the chairs used in the Stargate SG-1 episodes "The Gamekeeper" and "Avatar".

    • Goof: When Carter mentioned the time Jack O'Neill was in contact with the alien crystal entity that eventually took his form (in the Stargate SG-1 episode "Cold Lazarus"), she referred to him by his previous rank of Colonel. But even though that was several years ago, she should have referred to him by his current rank of General.

  • Quotes

    • (Discussing alien entity)
      Dr. Heightmeyer: So far the only behavior we have to evaluate suggests a certain malice. Based on what's been described to me the personification of Colonel Sheppard in everyone's dreams is behaving much like a sociopath.
      (turns to Teyla)
      Sheppard: Did I have a goatee?

    • McKay (to Sam): But, er, you said no more Gate travel. I thought that was a wise decision.
      Carter: I said on an "as-needed basis," McKay. I think this qualifies.
      McKay: Yeah, but don't you think that a science team would be better suited ...
      Ronon (walking past): You are a science team, remember?
      McKay: ... OK, fine, but it's a big planet, you know. We could really use some more manpower.

    • (The science team goes through the jungle)
      Zelenka: I still can't believe you are making me do this.
      McKay: Ahhh, you lost the bet. There's definitely something on this planet.
      Zelenka: Yes, but I think we said "of value". I hardly call this particular discovery valuable.
      Sheppard: Over here.
      McKay: (laugh) There you go. You'd better get started.
      Zelenka: No jo, no, vždycky je to na mì (Well, it is always up to me). Better get started. Yeah, sure.

    • Sheppard: I'm going to recommend sending a science team back here to check it out.
      McKay: I am a science team!

    • (Ronon drags McKay away from the crystal)
      McKay: Okay fine. Let's desert a potentially significant discovery because you guys don't want me to win a bet with Zelenka?

    • (Discussing the movie Alien after Teyla, Dr. Keller, and Ronon's dreams)
      McKay: So, very tense, working like a charm, Jocelyn's all freaked out beside me, I'm packing away the goobers and popcorn...and then the alien bursts out of John Hurt...
      Teyla: You didn't.
      McKay: Mm hm. Puked, all over her.
      Ronon: I've got to see this movie.
      Keller: Have you had any nightmares recently?
      McKay: Not a night goes by. Last night, I dreamnt, that um Colonel Carter invited me to her quarters for dinner.
      Teyla: Maybe you shouldn't be telling us this Rodney.
      Keller: Yeah, I said nightmare, not delusional male fantasy.
      McKay: Wait and listen. Turns out she was serving lemon chicken. I mean lemon. And the only reason she invited me to dinner was to tell me she was promoting Zelenka over me.
      Ronon: That's it?
      McKay: Then I was eaten by a whale. That's kinda how it happened.

    • Sheppard: I can't control what's in her dreams.
      McKay: Really? You think you can't control a person's dreams? My father read me Moby Dick when I was seven years old. I mean, seriously, what was the man thinking. You have any idea how long I had nightmares about being eaten by a whale?
      Ronon: They haven't stopped, have they?
      McKay: No.

    • Sheppard: Looks like one of those toys you play with when you're a kid.
      McKay: Commodore 64?
      Ronon: Triple-barrel shotgun?
      Sheppard: A kaleidoscope.

    • McKay: A lot of time has passed since the Ancients were around. Things change, maybe there's something here they didn't know about.
      Teyla: You've a bet riding on this, don't you?
      McKay: What makes you say that?

    • McKay: This jungle's pretty thick though. It could hide just about anything.
      Sheppard: I don't know. I'm wondering if somebody in a warm, cozy room, typing at their computer, sent us out here for their own amusement.
      McKay: You don't think Zelenka would do that?
      Ronon: If he did he's gonna be sorry.

    • Sheppard: Standard flyover in the Jumper, scan for lifesigns. Nothing.
      McKay: You can't fly around for ten minutes and decide there's nothing here.
      Sheppard: Yes I can.

    • Sheppard: What about survival? It's trapped. Will it die without a living host to transfer to?
      Carter: I was hoping not to find out.
      Teyla: We could give it a chance to leave. Go home.
      Carter: Back to the crystal.
      Sheppard: Yeah, sure why not. Send it through the gate back to its planet.
      Carter: I've heard of people being talked through their waking dreams before, maybe. Maybe McKay can be hypnotized into a state where he can somehow communicate with it.
      Teyla: He has successfully meditated into an altered state before.
      Sheppard: That was after he was genetically altered.
      (Ronon is confused)
      Ronon: I'm sorry, what? You want McKay to ask this thing to leave?
      Sheppard: We are talking about McKay. Scary things are not exactly his strength.
      Carter: And he is up against a creature apparently capable of manipulating the subconscious.
      Sheppard: I wish there was a way for one of us to get in there.
      Carter: Into McKay's dreams?
      Sheppard: Yeah, you know, help him out. Give him a little moral support. Come on, of all the things you've seen you've never come across a way for one person to get into another person's dreams?
      (Carter leaves quickly, clearly with an idea)
      Ronon: Where's she going? What's going on?
      Sheppard: I don't know, but I think, I'm about to see a side of McKay I never wanted to see.
      Teyla: It does not have to be you.
      Sheppard: Yeah well, it's my bad idea.
      (Sheppard leaves)
      Ronon: What was?
      (Teyla leaves, Ronon is hopelessly confused)
      Ronon: What? (sighs)

    • (Later in the fight between the two Sheppards)
      Evil Sheppard: Get up. Come on John, FIGHT!
      Sheppard: No, that's what you want.
      Evil Sheppard: Your fault Heightmeyer's dead. Your fault McKay is dead.
      McKay: I'm not dead.
      (Evil Sheppard puts McKay into the wall)
      Evil Sheppard: You can't win.
      McKay: Yes we can. You're vulnerable to electric shock. That's why I'm still alive.
      (Evil Sheppard electrocuted as Real Sheppard is given electric shock on table)
      Sheppard: What the hell was that?

    • Evil Sheppard: You can quit now.
      Sheppard: I'm not afraid of you.
      Evil Sheppard: Oh yes you are. I'm the one thing you are afraid of. You failed your friends. You brought this on them and there is NOTHING you can stop it.
      (Begin to fight)

    • Evil Sheppard: Give up. You'll never make it. You're too weak.
      McKay: Oh thank you, thanks for the encouragement. Way to help out.
      Evil Sheppard: Why would I wanna help you?
      McKay: Because I thought you...
      Sheppard: It's not me Rodney, don't listen to him.
      Evil Sheppard: You're pathetic. Might as well jump in.
      Sheppard: Don't be afraid.
      McKay: Oh, I have to get back. I have to get back that's my only chance.
      Evil Sheppard: You're gonna die out here.
      Sheppard: Shut up. Don't listen to him Rodney.
      McKay: That's easy for you to say. Why don't you help me row!
      (Good Sheppard appears at McKay side and helps row)

    • (While returning the crystals to their planet, hundreds of other crystals start coming to life)
      McKay: Hey, I have an idea. How about we get outta here.
      Sheppard: Sounds like a plan.

    • Sheppard: You know, this really isn't as strange as you led me to believe.
      McKay: Oh yeah? What about that?
      (Gestures behind them, where a clown is sitting in the boat)
      Sheppard: I hate clowns.

    • McKay: You sure about this?
      Sheppard: Not really.
      McKay: I'm pretty screwed up.
      Sheppard: You're tellin' me.

    • McKay: Oh come on, we don't have a single shred of hard evidence here. I mean, until we do this is just the Bogeyman.
      Carter: Exactly why you're going back to the planet where Colonel Sheppard touched the crystal.
      McKay: What? Why would we do that?
      Carter: Just as you said, to gather some hard evidence. See if there are any more of these things.

    • Ronon: Sorry Doc. Didn't mean to scare you.
      (Sheppard comes out from behind Ronon)
      Sheppard: We were sparring. I got in a lucky shot.
      (Ronon gives Sheppard a look)
      Keller: It's the middle of the night.
      Ronon: Maybe for you.

    • McKay: Which one are you?
      Sheppard: Me.
      McKay: Good you or bad you?
      Sheppard: Me me, is that you you?
      McKay: I think so.
      Sheppard: Thanks.
      McKay: Okay this is really weird.
      Sheppard: You're tellin' me.
      McKay: I thought there'd by more hot girls.
      Sheppard: Yeah.

  • Notes

    • This episode was nicknamed "Nightmare On Atlantis Street" around the show's production office.

    • International Air Dates:

      -This episode aired in Canada on October 22, 2007 on The Movie Network and Movie Central.
      -This episode aired in the UK on October 30, 2007 on Sky One.
      -Syndication Premiere: October 11-12, 2008.
      -This episode aired in the Czech Republic on July 8, 2009 on AXN Sci-fi.

    • This episode was leaked onto Usenet & BitTorrent on October 2, 2007. This was due to iTunes accidentally releasing this episode as 4x01 Adrift over the preceding weekend. The cause is most likely due to the fact the "Doppelganger" has the production code of 401.

    • Robert C. Cooper described this episode as a homage to the Season 1 Stargate SG-1 episode, "Cold Lazarus".

  • Allusions

    • Sheppard: So what are we talking – Freddy Krueger here?

      Freddy Krueger is the main fictional character from the A Nightmare on Elm Street series of films. Created by Wes Craven and portrayed by actor Robert Englund in every film of the series, he is an undead serial killer who can attack his sleeping victims supernaturally from within their own dreams.

    • Alien:

      A parasite comes out of Teyla's stomach and later Dr. Keller refers to "that alien movie." The movie Alien, a sci-fi horror film that became a cult hit, opened in 1979. Directed by Ridley Scott and starring Sigourney Weaver, it tells the story of the crew of a spaceship, Nostromo, being attacked by an alien parasite. The movie had several sequels: Aliens (1986), Alien 3 (1992) and Alien: Resurrection (1997). At this point, crossovers with the Predator film series begin: Alien vs. Predator (2004) and Aliens vs. Predator: Requiem (2007).

    • McKay: Commodore 64?

      The Commodore 64, aka C64 or C=64, was the first home computer and as of today it still holds the record for best selling single personal computer of all time. Released in August 1982 at a price of US$595 it featured 64 kilobytes of RAM, a 1Mhz processor, with sound and graphics performance that were vastly superior to IBM-compatible computers of that time. It was produced by Commodore, an American company now defunct, who also became famous for creating and selling the Amiga line of computers, the very first personal computers capable of real multitasking. The C64 still has many fans today and so does the Amiga which advanced operating system is still in development.

    • The Hitchhiker's Guide to the Galaxy:

      At the beginning of the episode while exploring the planet Sheppard says 42 when responding to the question of how many known gate addresses have no accompanying description. The number 42 is the numerical answer to Life, The Universe, and Everything used in Douglas Adams' series The Hitchhiker's Guide to the Galaxy.

    • Sheppard: Did I have a goatee?

      Sheppard's question is a reference to the original Star Trek series wherein the alternate/evil universe crew often had goatees to distinguish them from the 'real' crew.

    • Title:

      A doppelgänger is the ghostly double of a living person, a sinister form of bilocation. In the vernacular, "Doppelgänger" has come to refer (as in German) to any double or look-alike of a person-most commonly an "evil twin".