Film & TV List | Role | Media |
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| Falling Skies (2011) | Tom Mason | TV Show |
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| Queen of the Lot (2010) | Aaron Lambert | Movie |
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| Below the Beltway (2010) | Hunter Patrick | Movie |
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| ER (1994–2009) | Dr. John Carter | TV Show |
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| An American Affair (2009) | Mike Stafford | Movie |
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| The Librarian: The Curse of the Judas Chalice (2008) | Flynn Carsen | TV Movie |
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| W. (2008) | Don Evans | Movie |
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| Nothing But the Truth (2008) | Avril Aaronson | Movie |
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| The Librarian: Return to King Solomon's Mines (2006) | Flynn Carsen | TV Movie |
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| The Californians (2005) | Gavin Ransom | Movie |
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| The Librarian: Quest for the Spear (2004) | Flynn Carsen | TV Movie |
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| White Oleander (2002) | Mark Richards | Movie |
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| Enough (2002) | Robbie | Movie |
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| Scenes of the Crime (2001) | Seth | Movie |
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| Donnie Darko (2001) | Prof. Kenneth Monnitoff | Movie |
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| Beggars and Choosers (2000) | Davis G. Green | TV Show |
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| Fail Safe (2000) | Buck | TV Movie |
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| Pirates of Silicon Valley (1999) | Steve Jobs | TV Movie |
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| Can't Stop Dancing (1999) | Poe | Movie |
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| The Myth of Fingerprints (1997) | Warren | Movie |
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| Sesame Street (1996) | n/a | TV Show |
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| Friends (1995) | Dr. Jeffrey Rosen | TV Show |
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| There Goes My Baby (1994) | Finnegan | Movie |
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| Guinevere (1994) | Lancelot | TV Movie |
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| Swing Kids (1993) | Emil Lutz | Movie |
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| A Few Good Men (1992) | Cpl. Jeffrey Barnes | Movie |
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| Crooked Hearts (1991) | Ask | Movie |
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| Blind Faith (1990) | Eric | TV Movie |
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Film & TV List | Role | Media |
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| Lopez Tonight (2011) | Guest | TV Show |
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| Late Night with Jimmy Fallon (2009–2011) | Himself | TV Show |
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| Conan (2011) | Himself | TV Show |
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| Entertainment Tonight (2006–2009) | Himself | TV Show |
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| The View (2005) | Himself | TV Show |
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| The Oprah Winfrey Show (2004) | Himself | TV Show |
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| The Daily Show with Jon Stewart (2004) | Himself | TV Show |
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| The Tonight Show with Jay Leno (1994–2004) | Himself | TV Show |
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| Late Night with Conan O'Brien (1999) | Himself | TV Show |
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