1986 movie starring Pee Wee Herman as well, Pee Wee Herman, and it's a big adventure about his really cool bike, and about love and overcoming adversity.
Directed by Tim Burton, music by Danny Elfman, and co-written by Paul Reubens and Phil Hartman (who you may know from such productions as Saturday Night Live, The Simpsons and NewsRadio).
It's always been one of my favorite movies for some reason. The Large Marge scene alone is worth the price of rental, as well as a lot of the things in the details (watch the bottom of the screen when he's chaining up his bike, and also watch the bottom of the road signs in the relevant scene.) Of course, liking this movie is dependent on you liking the Pee Wee Herman shtick, but if you're a Phil Hartman fan, there's a lot of good stuff here. And you'll find out what's in the basement of the Alamo.