I got many favorites so I'm just gonna choose a random favorite: "The Lost World: Jurassic Park"
Though I'm sure to see some disagreement, The Lost World is my favorite of the JP trilogy due to the immense abundance of dinosaur action, the characterization of it's new characters and plenty of just as memorable scenes (the San Diego incident among others).
The first JP comes in second place followed by JP3.
This was a real tough decision I have too many favorite movies. It was between Peter Pan and Michael Jackson's Moonwalker, The Spongebob Squarepants movie or Mj's Ghosts and I think even though I love The Peter Pan Movies and the rest I have to go with Mj's Moonwalker.
I have a lot of Movies, that I love Ever so Dearly. But I figured I'd used this one to answer the question. The other one I was thinking of was: The Phantom Of The Opera starring Gerad Butler. So Labyrinth starring David Bowie is going to be my Answer for this question.