Definitely + 1 for Dark Crystal,The Goonies and Barbarella.
Try Karate Kid for the positive energy, Star Fighter for the cab, Gremlins for the X-mas magic, War Games for the talking computers, BMX Bandits for Nicole Kidman, Big Trouble in Little China if you like "Mystical, Action, Adventure, Comedy, Kung Fu, Monster, Ghost Stories" and of course: The Adventures of Buckaroo Banzai Across the 8th Dimension!!!
Edit: Flash Gordon!