| 2011 |
The Big Bang Theory: The Herb Garden Germination
Season 4, Episode 20 |
Episode, Actor - Himself |
| 2011 |
Need to Know: Episode
Season 1, Episode 57 |
Episode, Guest |
| 2011 |
Colbert Report: Episode
Season 7, Episode 16 |
Episode, Guest |
| 2011 |
Need to Know: Episode
Season 1, Episode 41 |
Episode, Guest |
| 2011 |
Nova: The Fabric of the Cosmos: What Is Space?
Season 39, Episode 5 |
Episode, Host |
| 2011 |
Nova: The Fabric of the Cosmos: Universe or Multiverse?
Season 39, Episode 8 |
Episode, Host |
| 2011 |
Last Call With Carson Daly: Episode
Season 11, Episode 29 |
Episode, Guest |
| 2011 |
Nova: The Fabric of the Cosmos: The Illusion of Time
Season 39, Episode 6 |
Episode, Host |
| 2011 |
Nova: The Fabric of the Cosmos: Quantum Leap
Season 39, Episode 7 |
Episode, Host |
| 2008 |
Colbert Report: Episode
Season 4, Episode 56 |
Episode, Guest |
| 2007 |
The Last Mimzy |
Movie, Actor - Scientist |
| 2006 |
Charlie Rose: Episode |
Episode, Guest |
| 2005 |
Late Show With David Letterman: Episode |
Episode, Guest |
| 2005 |
Colbert Report: 2005 November 28
Season 1, Episode 21 |
Episode, Guest |
| 2003 |
Nova: Einstein's Dream; String's the Thing |
Episode, Host |
| 2003 |
Nova: String's the Thing
Season 31, Episode 3 |
Episode, Host |
| 2003 |
Late Show With David Letterman: Episode |
Episode, Guest |
| 2003 |
Nova: Einstein's Dream
Season 31, Episode 5 |
Episode, Host |
| 2003 |
Nova: Welcome to the 11th Dimension
Season 31, Episode 4 |
Episode, Host |
| 2000 |
Maze |
Movie, Actor - Plate Techtonics Man |
| 2000 |
Frequency |
Movie, Actor - Himself |
| 1991 |
King Ralph |
Movie, Actor - Ed Mayes |
|
Mystery!: Campion: Mystery Mile |
Episode, Actor |
|
Mystery!: Campion: Mystery Mile |
Episode, Actor - Judge Lobbett |