John Travolta, Gabe Kaplan. Take a trip to the deep '70s to Buchanan High, with the delinquent cast of Welcome Back Kotter. Episodes include "One Flu Over the Cuckoo's Nest," "Father Vinnie," "Sweatside Story," "I'm Having Their Baby," "The De-Programming of Arnold Horshack" and "Goodbye, Mr. Kripps." 1976-78/color/156 min/NR.