Last night on "Late Night," Jimmy Fallon was visited by the always funny Pee-wee Herman. Pee-wee dished about his new Broadway show, his recent adventures around New York City, and his new best friend/understudy Regis Philbin. The best part of the show, however, was when Pee-wee took Fallon for a ride on his tandem bicycle. The two gallivanted around the studio like a couple of kids and had a lot of fun. Although, Fallon did look a little frightened!