Continuity mistake: If you check the Post-it note on the previous episode and this one's, it is not the same note. It's very similar, but the "t" in "Can't" is different, the apostrophe in "I'm" is within the word then above it, and other small differences.Sacha
Continuity mistake: Samantha and Carrie are hanging Carrie's poster in her apartment. In one shot, the whole poster is pinned to the wall and in the next shot, the bottom left part of the poster is curling up. After another shot of Samantha, the poster is pinned perfectly to the wall again.
Continuity mistake: The episode 'Attack of the 5 foot 10 woman' in season three, when Charlotte is afraid of the sauna. She is running into the sauna with a towel wrapped around her waist. The towel comes loose and is nearly falling off - but in the next shot it is neatly tied around her waist.