Don't hate me, but I preferred
Stardust the film to
Stardust the book. I saw the movie first and loved the charisma of the actors: by comparison the book's characters are a bit flat and don't have nearly the same chemistry. I know a lot of people love the book, so perhaps it was due to expectations: but still,
Stardust is in my top 20 - maybe even top 15 - favourite films, and the book doesn't even count as one I like.
I like
Jurassic Park way better as a book, though. I read the book first, and then got disappointed that the dinos in the movie didn't look as real as the ones in my imagination.

Oh, and I couldn't stand
Interview with the Vampire in either format. We get it, drinking blood = sex,
enough already! I think Buffy spoiled me for pretentious vampire lore.
I like
Breakfast at Tiffany's far better as a film, but I wouldn't say it's
better than the novella: just very, very different.