Goof: Before Rachel wakes up Emma, she is asleep wearing a pink hat. However when the camera angle changes, Emma is wearing a white hat.
Trivia: In this episode, the only one who can stop Emma from crying is her Aunt Monica. Ironically in "The One with the Baby on the Bus," Monica is the only person near whom her nephew Ben always cries.
Goof: Rachel's hair is several inches longer than at the end of the previous episode although it is supposed to be a direct continuation.
Continuity: Ross's birthday is inconsistent. In this episode, Ross says his birthday is October 18th. Also, in "The One with Five Steaks and an Eggplant" (which aired October 19th) Ross is taken to the Hootie and the Blowfish concert on his birthday. However, in "The One with George Stephanopoulos", Joey and Chandler buy Rangers' tickets to celebrate Ross's birthday on October 20th, and Ross says that his birthday was seven months ago, implying his birthday is in March. Furthermore, in "The One with Joey's New Girlfriend" Ross tells Gunther his birthday is in December.
Continuity: In the coffee house, when Ross and Joey are having a fight about Joey's proposal to Rachel, Ross makes "air quotes" and Joey says he doesn't know what they mean. But in "The One with the Secret Closet", Joey uses them correctly: Joey asks if Chandler has a bobby-pin to unlock the closet door. Chandler says, "Maybe Monica has a bobby-pin", to which Joey responds, "Sure... (air quotes) 'Monica'..." Joey also understands what they mean in "The One with Rachel's Date". When Ross talks about Rachel's date being with an "actor", Joey says, "Hey... I'm an (air quotes) 'actor', too".
Continuity: In the previous episode, outside of Rachel's hospital room you could see the waiting room. In this episode however, all you see is a wall.
Continuity: Wouldn't Monica realize that the ring Rachel is wearing is her grandmother's ring, and therefore belonging to Ross and not Joey? She was very familiar with it when Ross gave it to Emily in Season 4's "The One with the Worst Best Man Ever". Of course, if she had recognized it, as she should have, it would have sent this episode in an entirely different direction.
Continuity: When Chandler hears that Rachel took her breast out he asked what it looked like but he had already seen them in "The One with the Boobies".
Goof: When Ross notices Rachel is wearing the engagement ring and Rachel pretends she doesn't understand what he is getting at, Rachel's hair keeps alternating between down and behind her shoulders whenever the camera angle changes.
Goof: At the end when Ross sees the ring on Rachel's hand, Ross and Rachel's hands are interlinked. But when the shot changes, Rachel's hand is resting on top of Ross' and are no longer interlinked. This shot changes several times and their hand position alternates as well.
Goof: When Phoebe runs up to Ross to congratulate him on the engagement, Ross has a sandwich in his hand. When they shoot to Ross, he's not holding the sandwich and you see him pick it up.
Goof: At the end of the episode, when Joey is talking with Rachel and Ross, the door to their room is closed at first but later shows that it is open.
Continuity: In this episode we discover that Monica learned to play the piano as a girl, however, Ross is the only one we've ever seen playing a keyboard (although not very well).
Trivia: Cliff is never mentioned again after this episode.
Trivia: In "The One Where Old Yeller Dies" when Ross tells Rachel what he has planned for their life together, he says they'll have two children, a boy and girl. He also says he hopes the girl will come first so that Ben wouldn't feel competitive. He also wanted to name the girl Emily which is pretty close to Emma.
Trivia: After Rachel has the baby and Emma is being passed around to all of them, Chandler is the only one not to hold her, even though he is her uncle.
Trivia: A robotic baby is used in the scene when they pass around the baby after Rachel gives birth.
Trivia: When Rachel gives birth, you see a weird substance on the baby. That substance is grape jelly.
Continuity: In describing the second couple to Ross, Rachel says, "Well, they have some unusual pet names for each other, including, um... 'Evil bitch' and, uh, 'Sick bastard'". "Evil bitch" suggests that the husband is giving as good as he gets, but only the wife is hurling invectives; he just seems to endure them.
Trivia: In this episode we see that Joey is playing Dr Drake Ramoray on Days of Our Lives, however in a previous episode, "The One With Joey's New Brain", it is shown that the only reason Joey is back on the show is because he now has a woman's brain. The fact that he is now a woman in a man's body is also mentioned in "The One With the Cheap Wedding Dress". This would mean that he technically is no longer Dr Drake Ramoray even though he appears as him onscreen, even if he wasn't meant to be Dr Ramoray then how has Jessica Lockhart, who's brain he has, gained all this medical knowledge?