
Twenty-something girls vs. thirty-something women - S2-E17
Continuity mistake: At the beach party, a fan meets Carrie who holds her beer with both hands or one depending on the angle.

Continuity mistake: When Carrie cries "Engaged!" her hands are holding her head, but from the opposite angle they disappear.

Continuity mistake: While Carrie strolls through Central Park with friends there's a living statue version of Lady Liberty behind, standing and talking to people. A shot later the people are gone and the statue is seating on a bench.

Take me out to the ballgame - S2-E1
Continuity mistake: At the stadium, when Sam orders a beer Carrie's leg is either on top of the chair or in between two chairs, depending on the angle.

Twenty-something girls vs. thirty-something women - S2-E17
Continuity mistake: When Samantha meets the doctor at the beach her legs are crossed or not depending on the angle.

They shoot single people, don't they? - S2-E4
Continuity mistake: When the episode ends a lighting screen is reflected on Carrie's lenses.

Visible crew/equipment: Lighting screens reflected on Carrie and Sam's lenses while they have a snack at the flea market.

Continuity mistake: When Stanford tells Carrie that she has to have a shrink, a man suddenly appears behind and the kid next to him changes positions between angles.

Take me out to the ballgame - S2-E1
Continuity mistake: James walks towards the cab and kisses Sam goodbye, shot changes and he walks away backwards. Back to a shot on Sam and now check the reflection on the window below - James is now really close to the taxi and walking backwards again.

Continuity mistake: After Charlotte has had sex in the honeymoon suite, her boyfriend's hair is all messed-up. A shot later it's perfectly brushed.

Continuity mistake: When the breakfast scene is about to end, Miranda stabs her fork on the food. A shot later she has vanished from the spot.

Take me out to the ballgame - S2-E1
Continuity mistake: When Miranda is replied about "Charlotte's boyfriend's balls" she grabs a mug. A shot later she's got a wallet instead.

Continuity mistake: When Miranda tells the girls that she met someone at the gym she grabs a mug. A shot later it's on the table.

Take me out to the ballgame - S2-E1
Continuity mistake: During breakfast, when Miranda says "Big's out of the picture" the newspaper disappears from the table.

Continuity mistake: During the walk at night, after they cross the street and talk about "thinking delusional", a bunch of people appear out of nowhere between shots. (00:07:28)

Continuity mistake: The waiter brings Big and Carrie's dishes but when the shot changes to Carrie she already has her plate served.

Continuity mistake: When Madeline asks Carrie to write something for her wedding, Carrie's pony tail moves to behind her shoulder.

Take me out to the ballgame - S2-E1
Continuity mistake: When Carrie picks the flyball Sam stands up and there's nothing in her right hand. A shot later a cup appears. Then it disappears again and a frame afterwards it appears next to the hot dog.

Take me out to the ballgame - S2-E1
Continuity mistake: At the Yankees stadium, there's a man behind the girls buying food from a vendor. When the shot changes the vendor is gone and the man is already eating.
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