Continuity mistake: In the episode where Big returns from Paris, Carrie meets him at his apartment with a beret and 2 McDonalds bags. She says she got a Big Mac and a Filet O'Fish. She asks him which one he wants, holding the Big Mac in her left hand and the Filet O'Fish in her right. Instantly the sandwiches switch hands in the next shot as Big walks to the right.
Continuity mistake: After Big asks for permission to smoke his cigar, Carrie's arms are either under the table, or on the table depending on the shot.
The man, the myth, the viagra - S2-E8
Visible crew/equipment: When Samantha is having diner with Ed and she is about to discover what present is under the plate dome, a boom mic is reflected on the silver.
Visible crew/equipment: After Carrie lies to Miranda about getting her teeth cleaned, she turns around and you can see the shape of a square microphone pack through her coat.
Continuity mistake: When sitting at the bar, Samantha points to Charlotte and her date, who are heading up the stairs arm in arm carrying nothing. Yet in the next scene when they arrive at the honeymoon suite, they suddenly have their arms full with a large bag and a basket.
Continuity mistake: The splattered burger on the painting changes positions between shots.
Visible crew/equipment: Lighting screens are reflected on Sam's glasses during the picnic.
Continuity mistake: Carrie's mug magically swaps to a cookie in a mere second. (00:04:46)
Continuity mistake: Carrie cools Big's swollen nose and he touches it with his right hand. A shot later, his left hand is raised.
Take me out to the ballgame - S2-E1
Continuity mistake: When Miranda tells the girls to stop talking about sex and men, the way the bills are laid on the table changes between shots.
Take me out to the ballgame - S2-E1
Visible crew/equipment: The girls pick up Sam and when the cab leaves the camera is reflected on the rear window. (Pausing is not necessary at all, but it's fun to pause and check for a huge white sheet behind the camera, which gives away the mistake).
Four women and a funeral - S2-E5
Continuity mistake: While in the car after the funeral, Sam's coat is either covering all of her elbow, or leaving a bit uncovered, or a big part uncovered, depending on the shot.
Twenty-something girls vs. thirty-something women - S2-E17
Continuity mistake: At the party, when the doctor leaves, Laurel holds the drink with her left hand but a shot later it's on her right hand.
Continuity mistake: During the wedding, Sam is at the bar and asks for another Cosmopolitan but her glass is full (which makes no sense). When the waiter grabs the glass it's magically empty.
Continuity mistake: When Carrie is ordering her breakfast Charlotte is looking at her, her right hand on her head. Her fingers are extended or not depending on the angle.
Continuity mistake: When Seth tells Carrie that Dr. G's plant is plastic his hand is either holding the glass or not. This changes back and forth.
Continuity mistake: When the father says the boy needs a stitch he puts his hand around the boy's face, but a shot later it disappears.
Continuity mistake: When Carrie talks about his first date with Seth there's an aerial shot of him holding a drink and taking a sip. A shot later he is not holding the glass.
Continuity mistake: When Sam's boyfriend says "our sex life is diminished" his hand is on her right shoulder. A shot later it's on her left shoulder.
Continuity mistake: When the counselor tells Sam to play sexual games her boyfriend's hand is away, but a shot later it's suddenly on her shoulder.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl