Goof: When Monica is organizing the search for Marcel, she says to Chandler and Joey, "You guys take the first and second floor, Phoebe and I will take third and fourth". In the very next shot, Monica and Phoebe are knocking on Heckles' door, #8, on the first, or at most, second floor.
Continuity: The light switch that Ross uses to turn out the lights when he's alone with Rachel was added for this episode. It's not there in the previous episode, "The One with All the Poker". Furthermore, in "The One with the Fake Monica", two episodes later, the switch has been moved to the right. It is now closer to the picture frame and the toggle switch has been replaced with a rotating dimmer switch.
Goof: You can clearly see that it's not Heckles who picks up Marcel.
Goof: How did Marcel get outside onto the balcony? He went out the front door and Rachel, who was in the apartment the whole time, would have seen him come back.
Note: Monkeys are expert at climbing, so he had in all likelihood climbed up the fire escape on the outside of the building. In a later scene, we see him coming through a window into a hallway, which is probably how he got out to the fire escape in the first place.
Goof: When Monica is reading the engagement notices, she turned the page. In the next shot, the page isn't turned.
Monica: Mail call, Rachel Green, bunk seven.
Rachel: Thank you. (checking her mail) Oh, cool! Free sample of coffee!
Monica: Oh good! 'Cause where else would we get any?
Rachel: (picking up a booklet that came with her mail) Oh, great...
Monica: What is it?
Rachel: Country club newsletter. My mother sends me the engagement notices for inspiration. (turning to a page) Oh, my God! Oh, my God, it's Barry and Mindy!
Monica: Barry who you almost--?
Rachel: Barry who I almost.
Monica: And Mindy, your maid of--?
Rachel: Mindy, my maid of... Oh!
Rachel: (lamenting Barry and Mindy's marriage) Oh, I guess it would be different if I were... with somebody.
Ross: Whoa, what, uh... What happened to, uh, "Forget relationships! I'm done with men!" The whole penis embargo?
Ross: I've gotta go. Come on, Marcel! Come on! We're gonna go and take a bath. (talking baby-talk) Yes we are, aren't we? Yes, we are...
Chandler: They're still just friends, right?
Chandler: Don't you think if things were gonna happen with Rachel they would've happened already?
Ross: I'm telling you, she said she's looking for a relationship with someone exactly like me.
Joey: She really said that?
Ross: Well, I added the "exactly like me" part.
Ross: Well, I think it's perfect, y'know? It's just gonna be the two of us. She spent all day taking care of my monkey...
Chandler: I can't remember the last time I got a girl to take care of my monkey.
Ross: I figured after work, I'd go pick up a bottle of wine, go over there, and, uh... try to woo her.
Chandler: Hey, y'know what you should do? You should take her back to the 1890's when that phrase was last used.
Monica: He pooped in my shoe? Which one?
Rachel: I don't know. The left one.
Monica: Which ones?
Rachel: Oh. Oh, those little clunky Amish things you think go with everything.
Phoebe: (entering the apartment) Hey.
Phoebe: Whoa! Oh, why is the air in here so negative?
Chandler: Rachel lost Marcel.
Phoebe: Oh, no, how?
Monica: He, he pooped in my shoe.
Phoebe: Which one?
Monica: Those cute little black ones I wear all the time.
Phoebe: No, which one? The right or left? 'Cause the left one is lucky...
Louisa: Are you aware that possession of an illegal exotic is punishable by up to four years in prison and confiscation of the animal?
Phoebe: Oh my God! You'd put that poor little creature in jail?
Monica: Pheebs? You know how we talked about saying things quietly to yourself first?
Phoebe: Yes, but there's not always time.
Luisa: Luisa Gianetti! Lincoln High? I sat behind you guys in home room!
Rachel: Luisa? Oh, my God! Monica! It's Luisa!
Monica: The Luisa from home room!
Luisa: You have no idea who I am, do you?
Monica: No, none at all.
Monica: (about Phoebe screaming) What?!
Phoebe: Something just brushed up against my right leg!
Monica: What was it?
Phoebe: Oh, that's okay... it was just my left leg.
Phoebe: (after being hit with a tranquilizer dart) Oh, this is so intense. One side of my butt is totally asleep, and the other side has no idea.
Ross: All right, I want my monkey.
Rachel: Oh, come on, Luisa!
Luisa: Sorry, prom queen.
Ross: (to Rachel) You had to be a bitch in high school, you couldn't have been fat.
Chandler: Yeah, well I went to boarding school with four hundred boys. Any sex I had would've involved a major lifestyle choice.
International Episode Title:
Czech Republic: Hledá se opičák (Looking for a Monkey)
There is a new opening sequence during the theme song. New clips are added in from the first half of Season 1.
Music: "Theme from Shaft" by Isaac Hayes
This episode runs 23:13 on DVD (a typical sitcom runs about 22:00).
Joey: All right, all right. You're a monkey. You're loose in the city. Where do you go?
Chandler: Okay, it's his first time out, so he's probably gonna wanna do some of the touristy things. I'll go to Cats, you go to The Russian Tea Room.
Cats, composed by Andrew Lloyd Webber, is one of the most popular musicals of all time. Its 1998 film adaptation was also a huge success.
The Russian Tea Room is a famous restaurant in New York City and popular tourist attraction.
Mr. Heckles: Saw Regis Philbin once...
Regis Philbin is an Emmy Award-winning American talk show and game show host, known for his roles on Live (now Live with Kelly) and as host of Who Wants to Be a Millionaire.
Phoebe: Well, I'm sorry it wasn't one of those movies with, like, guns, and bombs, and buses going really fast.
Phoebe is referring to the 1994 action movie Speed, starring Keanu Reeves and Sandra Bullock. The plot involves a bus getting rigged with a bomb that will explode if the bus slows down to below 50 miles an hour.
Joey: Hey, I don't need violence to enjoy a movie. Just so long as there's a little nudity.
Monica: There was nudity!
Joey: I meant female nudity. Alright? I don't need to see Lou Grant frolicking.
Monica & Phoebe: Hugh! Hugh Grant!
The friends saw the movie Four Weddings and a Funeral, about a group of friends' experiences at weddings and a funeral. The 1994 blockbuster starred British actor Hugh Grant.
"Lou Grant", of course, was a character played by Edward Asner, appearing originally on The Mary Tyler Moore Show and then in the spinoff, Lou Grant.