| Movie | 1998 | Babylon 5: Thirdspace | Vir Cotto | |
| Movie | 1979 | Scavenger Hunt | Merle | |
| Movie | 1978 | The Bastard | Bertrand | |
| Movie | 1978 | Animal House | Kent 'Flounder' Dorfman | |
| Movie | 2000 | Everything's Jake | Assistant Librarian | |
| Movie | 1982 | Silent Rage | Charlie | |
| Movie | 1982 | Class Reunion | Hubert Downs | |
| Movie | 1980 | The Unseen | 'Junior' Keller (The Unseen) | |
| Movie | 1984 | Up the Creek | Gonzer | |
| Movie | 1989 | The Dream Team | Albert Ianuzzi | |
| Movie | 2000 | Buzz Lightyear of Star Command: The Adventure Begins | Booster Muchapper (voice) | |
| Movie | 2006 | Basilisk: The Serpent King | Carlton | |
| Movie | 1980 | Midnight Madness | Harold - Blue Team Leader | |
| Movie | 1998 | Little Bigfoot 2: The Journey Home | Derby Ferris | |
| Movie | 2001 | Title to Murder | Oscar, the Security Guard | |
| Movie | 1993 | Magic Kid | Bob Ryan | |
| Movie | 1979 | Swim Team | Bear | |
| Movie | 2005 | Path of Destruction | Terry | |
| Movie | 1983 | The Day After | Aldo | |
| Movie | 1985 | Howie Mandel: Live from Carnegie Mall | | |
| Movie | 1994 | Shake, Rattle and Rock! | Frank | |
| Movie | 1994 | Magic Kid II | Uncle Bob | |
| Movie | 1987 | ALF Loves a Mystery | | |
| Movie | 2000 | The Little Mermaid II: Return to the Sea | Dash (voice) | |
| Movie | 1980 | Getting Wasted | Marshall | |
| Movie | 2003 | Searching for Haizmann | Dr. Gaulforid | |
| Movie | 1979 | Take Down | Randy Jensen | |
| Movie | 1980 | Kraft Salutes Disneyland's 25th Anniversary | Self | |
| Movie | 1995 | Goldilocks and the Three Bears | Hawkins | |
| Movie | 1996 | Back to Back | Jimmy | |
| Movie | 1984 | The Pigs vs. The Freaks | Steamboat | |
| Movie | 1999 | Baby Huey's Great Easter Adventure | Phantoms' Manager / Baby Huey (Voice) | |
| Movie | 1995 | Cops n Roberts | | |
| Movie | 2003 | Christmas Vacation 2: Cousin Eddie's Island Adventure | Hospital Doctor | |
| Movie | 2008 | Starz Inside: In the Gutter | Self | |
| Movie | 1998 | The Yearbook: An Animal House Reunion | Self - Flounder | |
| Movie | 2002 | Sorority Boys | The Alum | |
| Movie | 2008 | Animal House: The Inside Story | Self | |
| Movie | 2003 | Autopsy Room Four | Howard Randall Cottrell | |
| Movie | 2003 | Where Are They Now?: A Delta Alumni Update | Kent 'Flounder' Dorfman | |
| TV Show | 1984 | Murder, She Wrote | Sgt. Paulsen | 1 |
| TV Show | 1977 | CHiPs | | 1 |
| TV Show | 1990 | Dream On | Leon Carp | 2 |
| TV Show | 1975 | The Jeffersons | | 1 |
| TV Show | 1985 | MacGyver | Dr. Kozby | 1 |
| TV Show | 1993 | Diagnosis: Murder | Vic Slovak | 1 |
| TV Show | 1989 | Doctor Doctor | | 1 |
| TV Show | 1994 | Babylon 5 | Vir Cotto | 110 |
| TV Show | 1982 | Faerie Tale Theatre | Peter | 1 |
| TV Show | 1995 | Freakazoid! | | 1 |
| TV Show | 1992 | Melrose Place | Public Defender Benjamin Skyler | 1 |
| TV Show | 2001 | Scrubs | Dr. Franklyn | 1 |
| TV Show | 1994 | Chicago Hope | Elliot Feinstein | 1 |
| TV Show | 1979 | Delta House | Kent 'Flounder' Dorfman | 13 |
| TV Show | 1996 | Jungle Cubs | | 34 |
| TV Show | 1986 | Throb | | 1 |
| TV Show | 1989 | Have Faith | | 7 |
| TV Show | 1990 | Shades of L.A. | | 1 |
| TV Show | 2003 | E!'s 101 | Self | 4 |
| TV Show | 1995 | Misery Loves Company | | 8 |
| TV Show | 2000 | Buzz Lightyear of Star Command | Booster (voice) | 62 |
| TV Show | 1992 | Jack's Place | | 1 |
| TV Show | 1990 | Sydney | | 1 |
| TV Show | 1994 | Rebel Highway | Frank | 10 |
| TV Show | 1982 | St. Elsewhere | Elliot Axelrod | 97 |
| TV Show | 1990 | Bobby's World | | 1 |
| TV Show | 1996 | Road Rovers | Sport (voice) | 1 |
| TV Show | 1984 | Night Court | Alexander Tobin | 1 |
| TV Show | 2002 | She Spies | Mr. Washman / Dental Patient | 1 |
| TV Show | 1993 | Good Advice | Roger | 1 |