Continuity mistake: When Charlotte is kicked out of bed by the couple a beige silk cushion flies off bed. Shot changes and the cushion disappears, only to reappear flying seconds later.
Valley of the twenty-something guys - S1-E4
Continuity mistake: When Carrie tells Big to call her, two men walk behind him. Shot changes to Carrie walking away and they suddenly reappear behind Big. Then shot on Big and when Back to Carrie they reappear behind him for a third time.
The turtle and the hare - S1-E9
Continuity mistake: During lunch Sam says "be cool", while extending her bare hand. A shot later a french fry with ketchup has magically appeared.
Oh come, all ye faithful - S1-E12
Continuity mistake: After Miranda has had sex, her green sheets change to grey.
Continuity mistake: When Carrie is debating whether to go to the babyshower or not, her hair is over both of her shoulders or just over the right one. This jumps back and forth.
Secret sex - S1-E6
Continuity mistake: When Big hugs Carrie her left hand is right next to her collarbone. A shot later her hand is around his body.
Secret sex - S1-E6
Continuity mistake: When Samantha is holding the poster against the wall she puts her left hand on the paper. In the following shot most of the hand lies on the wall.
The drought - S1-E11
Continuity mistake: During yoga class, when Sam tells Carrie to "f*uck Big's brain", Carrie's hands are on her head or down. This changes all the time.
The turtle and the hare - S1-E9
Continuity mistake: Miranda says "I know where my next orgasm is coming from" and all the girls look at each other. Sam is holding a glass with her right hand, but a shot later the glass is nowhere to be seen on the table and now she has a fork and is eating.
Continuity mistake: When the blonde woman is about to join Charlotte and her date, he has his jacket halfway down. A shot later it's back up.
The drought - S1-E11
Other mistake: When Carrie is trying to kiss Big, the reflection on the TV doesn't match the opposite side: The lamp and Carrie are missing.
Continuity mistake: Miranda pinches a bunch of lettuce, but in the next shot they transform into a tomato.
The turtle and the hare - S1-E9
Visible crew/equipment: Lighting screens reflected on Turtletaub's glasses when Sam says he's got a facial at 3.
Continuity mistake: Charlotte holds a picture of John John by the upper, part, in the close-up she is holding the left side.
The power of female sex - S1-E5
Continuity mistake: At the hotel Samantha holds the plate domes with her hands, but The one on the right disappears between shots.
Continuity mistake: Stanford's shirt collar is wrinkled and pointing out or ironed and tucked under the jersey, depending on the soht.
Oh come, all ye faithful - S1-E12
Continuity mistake: When Miranda's boyfriend comes from the shower, the green towel is covering his shoulder or not, depending on the shot.
The turtle and the hare - S1-E9
Visible crew/equipment: While Carrie and Brooke walk down the street, before and after they see Turtletaub the whole filming crew (a man holding a lighting screen, a sound technician wearing headphones and another crew member) plus cranes, tubes and boom mic are reflected on a glass for several seconds.
The turtle and the hare - S1-E9
Continuity mistake: When Miranda says she bought a new vibrator Samantha's yellow glass becomes transparent.
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