I'm trying to watch Sex And The City, The Movie. And I was trying to find out why, even though it's very true to the TV show's story and characters, I didn't find it very interesting. Then it struck me: it's not funny. The show was a comedy, the movie is not.
Additionally, it's not sexy. The show was raunchy beyond belief. The movie, not.
Amazing that they would remove two of the three most important characteristics of the show when making the movie. (The one they kept was romance.)