Goof: Atlantis receives Sheppard's IDC transmission before we hear the Stargate activate.
This episode featured the return of Michael, who was believed to be dead after the planet he was left on was destroyed by Sheppard (in the episode "Misbegotten"), but it is not known what information he could have given up about Atlantis.
Rodney, a Canadian character, makes reference to the Canadian fitness program ParticipACTION. He mentions he received a Bronze award, and claims it was due to his inept nature at rope climbing.
The Taranians were previously seen in "Inferno" where they were a group of people from all over the Pegasus galaxy hiding inside an Ancient dry-dock. After they fled the volcano on their planet, the Atlantis team relocated them.
Rodney is wearing a yellow belt at the start of his martial arts training with Ronon. In many forms of Martial Art, yellow is the first level of skill, which means that the wearer has a rudimentary understanding of what he is doing (beginners wear white).
(Sheppard and Ronon see a dart in the clearing)
Sheppard: No doubt.
Ronon: You thinking what I'm thinking?
Sheppard: I fly it. Pick you, Rodney and Teyla up. We use the dart's DHD to dial the gate.
Ronon: I was saying blow it up, but your idea's better.
McKay: You would think that the human side of [Michael] would temper his aggression a bit.
Teyla: Yes, because we humans aren't aggressive at all.
McKay: Well, certainly less aggressive than the... oh, sarcasm! Yeah, nice.
Sheppard: Did anybody get a good look of that thing?
McKay: Aside from its severed appendage, no that thing moved incredibly fast.
Ronon: In some ways it looked almost like a human.
McKay: If by human you mean clad in a grotesquely proportionate exoskeleton, yes, very human.
(after the explosion)
Sheppard: Is everyone OK?
Ronon: Yeah, I'm good.
McKay: I think you singed my eyebrows. Think you used enough dynamite there, Butch?
(Ronon is teaching Rodney how to fight.)
Ronon: Eyes straight ahead, focus on me. Never ever look away from your enemy. Shows weakness. Are you weak?
(Rodney is dressed in ninja/martial arts clothes and holding a stick)
McKay: Ah... no.
Ronon: Good. Are you ready?
(Ronon hits Rodney in the stomach with his stick. Rodney bends over in pain)
Ronon: McKay, what did I say? Don't take your eyes off of me. You gotta anticipate their next move. (Rodney is still in pain) You all right?
Ronon: All right, well we'll tie these up so I don't hurt ya. You're getting better.
McKay: Oh, really?
(Elizabeth and John come in)
Sheppard: How are the ninja lessons going, Jet Li?
Sheppard: Alien. (Pause) The movie Alien, they used the air shafts to move around the ship.
McKay: And then systematically killed the entire crew one by one. Thank you for bringing that up.
Sheppard: They didn't kill 'em all.
Sheppard: If they wanted to create more Wraith, don't they usually get a male and female, you know, get a room?
McKay: It doesn't work that way with a Wraith, alright, at least we don't think it does. I'm not entirely sure as to the Wraith's reproductive methods.
Sheppard: I don't want to be around to watch that film.
Rachel Lutrell read the "Previously on Stargate Atlantis" line.
Paul McGillion (Dr. Carson Beckett) is in the opening credits for this episode but does not appear.
The underground scenes were filmed in the tunnels underneath an abandoned mental institution.
International Air Dates:
-This episode aired in Canada on January 29, 2007 on Movie Central and March 5, 2007 on The Movie Network.
-This episode aired in the UK on March 7, 2007 on Sky One.
-Syndication Premiere: May 10-11, 2008.
-This episode aired in Australia on July 3, 2008 on Channel 7.
-This episode aired in the Czech Republic on June 22, 2009 on AXN Sci-fi.
The scriptwriters have been having a lot of fun with their Alien references. The previous episode had many scenes that referenced scenes in Ridley Scott's Alien. In this episode, Sheppard makes a direct reference to that film. However, this episode is more of a homage to James Cameron's Aliens. Numerous scenes in the episode - the cocoons in an underground facility, the lifesigns detector, the Iratus bug in a laboratory jar, the long shots of multiple levels in the facility - have direct analogues in the Cameron film.
Sheppard: (to Rodney) How' the ninja lessons going, Jet Li?
Jet Li, a martial arts expert, has become a highly celebrated martial arts action stars. Originally from China, he is among the few actors who have achieved success outside of Asia. He has starred in several successful films, including Romeo Must Die (2000), Hero (2002), and Fearless (2006).
Alien (1979) is a film about an creature that sneaks into a space ship and kills off the crew one by one. It was a box office success, and spawned literature, video games, merchandise, and three sequels: Aliens (1986), Alien³ (1992), and Alien: Resurrection (1997). The creatures in this episode even look similar to the film beast.
Sheppard: What then? Take over the entire galaxy? That's a little too Dr. Evil if you ask me.
This is a reference to the Austin Powers movies and their main villain, Dr. Evil.
McKay: Think you used enough dynamite there, Butch?
This is a reference to (and direct quote from) the 1969 western, Butch Cassidy and the Sundance Kid.