... and Fonzie, Richie and Chachi, too! ABC has given the go-ahead for a two-hour Happy Days reunion to mark the show's 30th anniversary, Variety reports. The special, which could air as early as November, will reunite the entire cast, including Ron Howard, Henry Winkler, Tom Bosley, Marion Ross, Erin Moran, Anson Williams, Scott Baio and Pat "Wax on, wax off" Morita.