Film & TV List | Role | Media |
 |
| Knife Fight (2012) | Larry | Movie |
|
| Pound Puppies (2010–2012) | Lucky
/
Ace | TV Show |
|
| Textuality (2011) | Clive | Movie |
|
| The New Adventures of Old Christine (2009–2010) | Dr. Max Kershaw | TV Show |
|
| Who Is Clark Rockefeller? (2010) | Clark Rockefeller | TV Movie |
|
| Law & Order: Special Victims Unit (2009) | Vance Shepard | TV Show |
|
| Stuck (2009) | Erick | TV Movie |
|
| Trust Me (2009) | Mason McGuire | TV Show |
|
| My One and Only (2009) | Charlie | Movie |
|
| Best Thing Ever (2009) | Dean | TV Movie |
|
| Alien Trespass (2009) | Dr. Ted Lewis/Urp | Movie |
|
| Immigrants (L.A. Dolce Vita) (2008) | Vlad (voice: English version) | Movie |
|
| Monk (2008) | James Novak | TV Show |
|
| The Andromeda Strain (2008) | Jack Nash | TV Movie |
|
| The Charlotte Church Show (2006) | Hywl | TV Show |
|
| Lovespring International (2006) | Roman | TV Show |
|
| Will & Grace: Say Goodnight Gracie (2006) | Will Truman | TV Movie |
|
| Will & Grace (1998–2006) | Will Truman | TV Show |
|
| The Sisters (2005) | Gary Sokol | Movie |
|
| Break a Leg (2005) | Tad | Movie |
|
| Dead Like Me (2004) | Ray Summers | TV Show |
|
| Here's to Life! (2000) | Owen Rinard | Movie |
|
| The Audrey Hepburn Story (2000) | Mel Ferrer | TV Movie |
|
| A Will of Their Own (1998) | Pierce Peterson | TV Movie |
|
| Holy Man (1998) | Scott Hawkes | Movie |
|
| Free Enterprise (1998) | Mark | Movie |
|
| Ally McBeal (1998) | Kevin Kepler | TV Show |
|
| Veronica's Closet (1997) | Griffin | TV Show |
|
| Borrowed Hearts (1997) | Sam Field | TV Movie |
|
| Jenny (1997) | Jason Slade | TV Show |
|
| Exception to the Rule (1997) | Timothy Bayer | Movie |
|
| The Outer Limits (1997) | John Virgil | TV Show |
|
| Lonesome Dove: The Outlaw Years (1995–1996) | Clay Mosby | TV Show |
|
| Townies (1996) | Scott | TV Show |
|
| Diagnosis Murder (1996) | Boyd Merrick | TV Show |
|
| Highlander (1996) | Matthew McCormick | TV Show |
|
| Night Visitors (1996) | Andy Robinson | TV Movie |
|
| Lonesome Dove: The Series (1994–1995) | Col. Francis Clay Mosby | TV Show |
|
| The Man Who Wouldn't Die (1994) | Jack Sullivan | TV Movie |
|
| Island City (1994) | Greg 23 | TV Movie |
|
| Silk Stalkings (1993) | Michael O'Hara | TV Show |
|
| Cobra (1993) | Blake Devaroe | TV Show |
|
| Double, Double, Toil and Trouble (1993) | Don Farmer | TV Movie |
|
| Call of the Wild (1993) | Hal | TV Movie |
|
| The Commish (1992–1993) | Danny Nolan
/
Ted Eckels | TV Show |
|
| Miracle on Interstate 880 (1993) | Tony | TV Movie |
|
| Family of Strangers (1993) | Sam | TV Movie |
|
| Relentless: Mind of a Killer (1993) | Stu Feltzer | TV Movie |
|
| Street Justice (1992–1993) | Det. Eric Rothman
/
Off. | TV Show |
|
| Return to the Lost World (1992) | Edward Malone | Movie |
|
| The Lost World (1992) | Edward Malone | Movie |
|
| Giant Steps (1992) | Jack Sims | Movie |
|
| Neon Rider (1992) | Derek | TV Show |
|
| Street Legal (1990–1991) | Barry Taylor
/
Cal | TV Show |
|
| E.N.G. (1990–1991) | n/a | TV Show |
|
| Rin Tin Tin: K-9 Cop (1990) | David Baxter | TV Show |
|
| Hangin' In (1987) | Jody | TV Show |
|
| Much Ado About Nothing (1987) | Balthasar | TV Movie |
|
| The Boys from Syracuse (1986) | Tailor's Apprentice | TV Movie |
|
Film & TV List | Role | Media |
|
| The Colbert Report (2012) | Himself | TV Show |
|
| The View (2004–2010) | Himself | TV Show |
|
| Hell's Kitchen (2009) | Himself | TV Show |
|
| The Soup (2009) | Himself | TV Show |
|
| Entertainment Tonight (2006–2009) | Himself | TV Show |
|
| Late Night with Conan O'Brien (1999–2009) | Himself | TV Show |
|
| American Idol (2007–2008) | Himself | TV Show |
|
| The Oprah Winfrey Show (2006) | Himself | TV Show |
|
| The Late Late Show with Craig Ferguson (2005) | Himself | TV Show |
|
| The Tonight Show with Jay Leno (2002–2004) | Himself | TV Show |
|
| Saturday Night Live (2002) | Himself - Host | TV Show |
|
| The Daily Show with Jon Stewart (1999–2001) | Himself | TV Show |
|