- Behind Closed Doors with Natalie Morales
2015 Himself (archive footage)
- Stanley's Dinosaur Round-Up
2006 In Memory Of
- Clifford's Really Big Movie
2004 In Memory Of
- Bad Santa
2003 In Memory Of
- Manhood
2003 Eli
- The Golden Girls: Lifetime Intimate Portrait Series
2003 Narrator (voice)
- Tadpole
2002 Stanley Grubman
- Man of the Year
2002 Bill
- 8 Simple Rules
2002 Paul Hennessy
- Wednesday 9:30 (8:30 Central)
2002 John Ritter
- Breaking News
2002
- Nuncrackers
2001 Narrator
- Scrubs
2001 Sam Dorian
- Panic
2000 Josh
- Terror Tract
2000 Bob Carter
- TripFall
2000 Tom Williams
- Lost in the Pershing Point Hotel
2000 Christian Therapist
- Clifford the Big Red Dog
2000 Clifford (voice)
- TV Funhouse
2000 Narrator (voice)
- Clifford The Big Red Dog: Best Buddies
2000 Clifford
- It Came from the Sky
1999 Donald Bridges
- Lethal Vows
1999 David Farris
- Holy Joe
1999 Joe Cass
- Batman Beyond
1999 Dr. David Wheeler (voice)
- Law & Order: Special Victims Unit
1999 Dr. Richard Manning
- Family Law
1999 Father Andrews
- Shadow of Doubt
1998 Steven Mayer
- I Woke Up Early the Day I Died
1998 Robert Forrest
- Montana
1998 Dr. Wexler
- Bride of Chucky
1998 Chief Warren Kincaid
- Chance of a Lifetime
1998 Tom Maguire
- Loss of Faith
1998 Bruce Barker
- Dead Husbands
1998 Dr. Carter Elston
- Felicity
1998 Mr. Andrew Covington
- A Gun, a Car, a Blonde
1997 Duncan the Bartender
- A Child's Wish
1997 Ed Chandler
- Sink Or Swim
1997 Hank
- Nowhere
1997 Moses Helper
- Ally McBeal
1997 George Madison
- King of the Hill
1997 Eugene Grandy (voice)
- Over the Top
1997 Justin
- Buffy the Vampire Slayer
1997 Ted Buchanan
- Veronica's Closet
1997 Tim Margolin
- Dead Man's Gun
1997 Harry McDonacle
- Sling Blade
1996 Vaughan Cunningham
- Mercenary
1996 Jonas Ambler
- Unforgivable
1996 Paul Hegstrom
- For Hope
1996 Date #5 (uncredited)
- The Colony
1995 Rick Knowlton
- Gramps
1995 Clarke MacGruder
- NewsRadio
1995 Frank Westford
- North
1994 Ward Nelson
- Touched by an Angel
1994 Mike O'Conner
- Chicago Hope
1994 Joe Dysmerski
- Heartbeat
1993 Bill Grant
- The Only Way Out
1993 Jeremy Carlisle
- Dave's World
1993 John Ritter
- Stay Tuned
1992 Roy Knable
- Noises Off...
1992 Garry Lejeune / Roger Tramplemain
- Hearts Afire
1992 John Hartman
- Fish Police
1992 Inspector Gil (voice)
- The Larry Sanders Show
1992 John Ritter
- The Summer My Father Grew Up
1991 Paul
- Problem Child 2
1991 Ben Healy
- The Real Story of O Christmas Tree
1991 Piney (voice)
- Problem Child
1990 Ben
- The Dreamer of Oz
1990 L. Frank Baum
- Wings
1990 Stuart Davenport
- It
1990 Ben Hanscom
- Poochinski
1990 Executive Producer
- Skin Deep
1989 Zach
- My Brother's Wife
1989 Barney
- Anything but Love
1989 Patrick Serreau
- Tricks of the Trade
1988 Donald Todsen (uncredited)
- Mickey's 60th Birthday
1988 Dudley Goode
- Real Men
1987 Bob Wilson
- Prison for Children
1987 David Royce
- The Last Fling
1987 Phillip Reed
- It's Howdy Doody Time: A 40-Year Celebration
1987 Himself - Guest
- Hooperman
1987 Detective Harry Hooperman
- A Smoky Mountain Christmas
1986 Judge Harold Benton (uncredited)
- Unnatural Causes
1986 Frank Coleman
- Life with Lucy
1986 John Ritter
- Letting Go
1985 Alex
- Love Thy Neighbor
1984 Danny Loeb
- Strong Kids, Safe Kids
1984 Himself
- Muppet Babies
1984
- Three's a Crowd
1984 Jack Tripper
- The Cosby Show
1984 Ray Evans
- Sunset Limousine
1983 Alan O'Black
- The Flight of Dragons
1982 Peter Dickinson (voice)
- In Love with an Older Woman
1982 Robert
- Pray TV
1982 Tom McPherson
- Nature
1982 Narrator (voice)
- They All Laughed
1981 Charles Rutledge
- Wholly Moses
1980 Satan (The Devil)
- John Ritter: Being of Sound Mind and Body
1980 Writer
- Hero at Large
1980 Steve Nichols
- The Comeback Kid
1980 Bubba Newman
- Americathon
1979 President Chet Roosevelt
- The Ropers
1979
- Leave Yesterday Behind
1978 Paul Stallings
- Ringo
1978 Marty Flesh
- The Love Boat
1977 Dale Riley
- Three's Company
1977 Jack Tripper
- Nickelodeon
1976 Franklin Frank
- The Prisoner of Second Avenue
1975 Elevator Passenger (uncredited)
- The Night That Panicked America
1975 Walter Wingate
- Starsky & Hutch
1975 Tom Cole
- Doc
1975
- Saturday Night Live
1975 Audience Member (uncredited)
- Petrocelli
1974 John Oleson
- Rhoda
1974 Vince Mazuma
- The Stone Killer
1973 Hart
- The Lie
1973 Bauer
- Kojak
1973 Kenny Soames
- Barnaby Jones
1973 Joe Rockwell
- The Other
1972 Rider
- Evil Roy Slade
1972 Priest (uncredited)
- M*A*S*H
1972 Private Carter
- The Rookies
1972
- The Bob Newhart Show
1972 Dave
- The Streets of San Francisco
1972 John 'Johnny' Steiner
- The Waltons
1972 Rev. Matthew Fordwick
- Scandalous John
1971 Wendell
- The Barefoot Executive
1971 Roger
- Great Performances
1971 Richard
- Owen Marshall: Counselor at Law
1971 Greg
- The Mary Tyler Moore Show
1970 Reverend Chatfield
- Dan August
1970 Coley Smith
- Hawaii Five-O
1969 Ryan Moore
- Medical Center
1969 Ronnie
- Mannix
1967 Cliff Elgin
