Improv comic Paul Reubens spent several years honing a character called Pee Wee Herman, a man-child in a too-tight glen plaid suit. He appeared on Letterman, developed a cult following and was eventually able to parlay the character into a feature-length film that has also become a cult classic. “Pee Wee’s Big Adventure” (1985) is an oddball comedy in which Pee Wee engages in elaborate acts of whimsy that eventually pirouette toward punchlines. The jokes are esoteric but the talent behind the scenes (Tim Burton, Danny Elfman, Phil Hartman) somehow keeps you caring about one dude’s search for his bicycle.