Gabe Kaplan Gabe Kotter Actor Marcia Strassman Julie Kotter Actor John Sylvester White Mr. Michael Woodman Actor Robert Hegyes Juan Epstein Actor Lawrence-Hilton Jacobs Freddie "Boom Boom" Washington Actor Ron Palillo Arnold Horshack Actor John Travolta Vinnie Barbarino Actor Vernee Watson Guest Star Debralee Scott Guest Star Jess Nadelman Guest Star Laura Zucker Guest Star Leslie Ackerman Guest Star Helaine Lembeck Guest Star Suze Lanier-Bramlett Guest Star Michael Taylor Guest Star Dennis Bowen Guest Star Jeff Martin Guest Star Bridget Hanley Guest Star Arnold Soboloff Guest Star Eric Suter Guest Star James Komack Executive Producer, Director Alan Sacks Producer Eric Cohen Producer, Writer Bob LaHendro Director George Yanok Producer, Writer Carl Kleinschmitt Writer Jerry Rannow Writer Marilyn Suzanne Miller Writer Pat Proft Writer Jerry Ross Writer Peter Meyerson Writer Ann Gibbs Writer Jewel Jaffe Rannow Writer Joel Kimmel Writer Michael Warren Writer Tiffany York Writer Bo Kaprall Writer