The Making of 'Lost World' (1997)

This feature-length documentary is incredibly informative with all its interviews with both the cast and crew, as well as behind the scenes footage filmed during the making of the film and special looks to the creation of the animatronic and CGI dinosaurs.
Divided in eight chapters: The story, Preproduction, Production begins, The lost world, Surprise ending, The magic of ILM, Cuts, roars and notes, The last worlds.