| Year | Title | Role | Notes |
|---|---|---|---|
| 1985–1986 | Another World | Ned | Unknown episodes |
| 1988 | Spenser: For Hire | K.C. | 1 episode |
| 1993 | Last Outlaw, TheThe Last Outlaw | Wills | Television film |
| 1994 | Frasier | Danny Kriezel | Episode: "Seat of Power" |
| 1997 | Practice, TheThe Practice | Atty. Leonard Goode | 2 episodes |
| 1997 | Intensity | Edgler Foreman Vess | Television film |
| 1998 | Pentagon Wars, TheThe Pentagon Wars | Col. J.D. Bock | Television film |
| 2000 | Sole Survivor | Victor Yates | Television film |
| 2001–2010 | Scrubs | Dr. Perry Cox | 179 episodes Series Regular Nominated - TCA Award for Individual Achievement in Comedy (2002) Nominated - Satellite Award for Best Actor – Television Series Musical or Comedy (2002) |
| 2002 | Clone High | Doug Prepcourse (Voice) | 1 episode |
| 2003 | Kim Possible | Rudolph "White Stripe" Farnsworth (Voice) | 1 episode |
| 2003 | Spider-Man: The New Animated Series | Richard Damien (Voice) | 2 episodes |
| 2003.1 !2003–2005 | Justice League Unlimited | The Atom (Voice) | 4 episodes |
| 2005 | Alien Planet | Narrator | |
| 2006–2010 | Boondocks, TheThe Boondocks | The White Shadow (Voice) | 2 episodes |
| 2008–present | WordGirl | The Whammer (Voice) | 4 episodes |
| 2011 | Dan Vs. | Imposter Dan (voice) | 2 episodes |
| 2012 | Burn Notice | Tom Card | 3 episodes |
Read more about this topic: John C. McGinley
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