G abe Kaplan, 80, has had a long and diverse career that took him from stand-up comedy beginnings to his more recent run as a world-champion poker player and commentator. But we all know him best as ...

Life after Welcome Back, Kotter: White’s portrayal of Vice Principal Michael Woodman—stern, bureaucratic and frequently exasperated—became a memorable foil to Gabe Kotter and the Sweathogs.