Topzle Updated: Wikipedia source
Theodore Raymond Knight (born March 26, 1973) is an American actor. He is best known for his role as Dr. George O'Malley on the ABC medical drama television series Grey's Anatomy (2005–2009, 2020), which earned him a nomination for the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series in 2007.
| Year | Title | Role. | Notes |
| 2000 | Dear, Home Letters from World War I | Soldier | |
| 2002 | Garmento | Daniel | |
| 2006 | Last Request | Jeffrey | |
| 2013 | 42 | Harold Parrot | |
| 2015 | A Year and Change | Kenny | |
| 2017 | Hello Again | Carl (The Husband) | |
| 2024 | Adam the First | Jacob Jr | |
| 2025 | Forge | Sandy Baker |
| Year | Title | Role | Notes |
| 2003 | Charlie Lawrence | Ryan Lemming | 6 episodes |
| Frasier | Alex | Episode: "Maris Returns" | |
| 2004 | Law & Order: Criminal Intent | Neil Colby | Episode: "F.P.S." |
| CSI: Crime Scene Investigation | Zero Adams | Episode: "XX" | |
| 2005–2009, 2020 | Grey's Anatomy | Dr. George O'Malley | Main role (season 1–5), guest appearance (season 17)103 episodesSatellite Award for Best Cast – Television SeriesScreen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama SeriesNominated—Golden Nymph Award for Outstanding Actor in a Drama SeriesNominated—Primetime Emmy Award for Outstanding Supporting Actor in a Drama SeriesNominated—Satellite Award for Best Supporting Actor – Series, Miniseries or Television FilmNominated—Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series |
| 2006 | Sesame Street | Private "I" | Episode: "Baby Bear Writes a Story Called 'The 3 Astro Bears |
| 2011 | Law & Order: Special Victims Unit | Gabriel Thomas/Brian Smith | Episode: "Double Strands" |
| 2012–13 | The Good Wife | Jordan Karahalios | 7 episodes |
| 2016 | 11.22.63 | Johnny Clayton | 4 episodes |
| 2017 | The Catch | Tommy Vaughan | 6 episodes |
| When We Rise | Chad Griffin | 4 episodes | |
| Genius: Einstein | J. Edgar Hoover | 4 episodes | |
| 2018 | Genius: Picasso | Max Jacob | 6 episodes |
| 2019 | God Friended Me | Gideon | Episode: "The Last Grenelle" |
| 2019–present | The Bravest Knight | Sir Cedric (voice) | Main role |
| 2020 | Will & Grace | Dexter Murphy | Episode: "Filthy Phil, Part II" |
| The Comey Rule | Reince Priebus | Miniseries | |
| 2020–2022 | The Flight Attendant | Davey Bowden | Main role (season 1); Recurring (season 2)Nominated—Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Comedy Series |