The Adventures of Baron Munchausen

This ranks along with Time Bandits and The Fisher King as one of Terry Gilliam's finest films. It features all of his visual excesses with a sense of humor and a sense of wonderment. The baron tells some fantastical tales about his adventures from one end of the world to the other (not to mention the moon) in order to save a city from being overrun by the Turkish army. A young Sarah Polley plays Sally, a girl who believes in the baron and accompanies him on the adventure, and interestingly, provides the grounding in reality for the film itself. Perhaps a bit long, but an adventure all the way.