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movieSweeney Killing Sweeney
2018 · Dr. Jonathan Katz
movieThe Truth About Lies
2018 · Dr. Pollard
movieEvil Bong: High-5!
2016 · Jeff
movieCall Me Lucky
2015 · Self
tvBob's Burgers
2011 · Dean Dixon (voice)
Death Row Diet
2009 · , Producer
movieAn Evening with Dr. Katz: Live from the Comedy Central Stage
2007 · Dr. Katz
movieAre We Done Yet?
2007 · Mr. Rooney
movieFarce of the Penguins
2006 · Steve the Owl (voice)
tvHelp Me Help You
2006
tvSquidbillies
2005 · Therapist (voice)
tvHopeless Pictures
2005
movieDaddy Day Care
2003 · Dan Kubitz
tvRaising Dad
2001 · Writer, Creator
movieThe Independent
2000 · Todd
movieState and Main
2000 · Howie Gold
From Where I Sit
2000 · Writer, Executive Producer
tvThe Dick and Paula Celebrity Special
1999 · Various
tvHome Movies
1999
tvHollywood Squares
1998 · Self - Panelist
movieThe Spanish Prisoner
1997 · Lawyer
tvSouth Park
1997 · Dr. Katz (voice)
tvThe View
1997 · Self
tvMake Me Laugh
1997 · Comedian
tvInk
1996 · Leo
tvMr. Show with Bob and David
1995 · Dr. Katz (voice) (uncredited)
tvDr. Katz, Professional Therapist
1995 · Dr. Katz (voice), Writer, Creator
tvTV Nation
1994
tvLate Night with Conan O'Brien
1993 · Self - Guest
tvThe Larry Sanders Show
1992 · Jonathan Katz
movieHomicide
1991 · Undertaker
movieThings Change
1988 · Jackie Shore
movieLip Service
1988 · Jerry
movieHouse of Games
1987 · Story
tvThe Tonight Show Starring Johnny Carson
1962 · Self