Tuesday Weld and Martin Mull in Serial (1980)

Charlie Sheen and Martin Mull in Two and a Half Men (2003)

Ellen DeGeneres and Martin Mull in The Ellen Show (2001)

Giovanni Ribisi, Seth Green, Martin Mull, Peter Riegert, Brenda Song, and Tonita Castro in Dads (2013)

Bea Arthur and Martin Mull in The Golden Girls (1985)

Jeffrey Tambor and Martin Mull in The Larry Sanders Show (1992)

Brad Garrett and Martin Mull in 'Til Death (2006)

Beth Broderick and Martin Mull in Sabrina the Teenage Witch (1996)

Melissa Joan Hart and Martin Mull in Sabrina the Teenage Witch (1996)

Martin Mull and Picabo Street in America's Funniest Home Videos (1989)

Martin Mull and Fred Willard in Roseanne (1988)

Roseanne Barr, Bonnie Bramlett, Michael Des Barres, and Martin Mull in Roseanne (1988)

Peter Bonerz, Martin Mull, and Tom Smothers

Martin Mull in The Geena Davis Show (2000)

Geena Davis, Peter Horton, and Martin Mull in The Geena Davis Show (2000)

Martin Mull and David Starzyk in A Boyfriend for Christmas (2004)

David Alan Grier, Leslie Jordan, and Martin Mull in The Cool Kids (2018)

David Alan Grier, Leslie Jordan, Vicki Lawrence, and Martin Mull in The Cool Kids (2018)

Lesley Ann Warren, Vicki Lawrence, and Martin Mull in The Cool Kids (2018)

Martin Mull and Fred Willard in D.C. Follies (1987)

Ed Begley Jr., David Alan Grier, Vicki Lawrence, and Martin Mull in The Cool Kids (2018)

Ed Begley Jr., David Alan Grier, Leslie Jordan, Vicki Lawrence, and Martin Mull in The Cool Kids (2018)

David Alan Grier and Martin Mull in The Cool Kids (2018)

David Alan Grier, Jamie Farr, Leslie Jordan, Vicki Lawrence, and Martin Mull in The Cool Kids (2018)

On the set of "War of the Poseys".  Toronto, Canada 2000.

Martin Mull at an event for The 6th Annual TV Land Awards (2008)

Tim Curry, Christopher Lloyd, Lesley Ann Warren, Madeline Kahn, Eileen Brennan, Michael McKean, and Martin Mull in Clue (1985)

Paul Reiser, Lee Ann Edwards, Martin Mull, and Jessica Tuck in Mr. Write (1994)

Dyan Cannon, Sarah Michelle Gellar, Martin Mull, and Ryan O'Donohue in Beverly Hills Family Robinson (1997)

Ellen DeGeneres, Cloris Leachman, Jim Gaffigan, Martin Mull, and Emily Rutherfurd in The Ellen Show (2001)