Acting

—

1 episode

2025		Jimmy Kimmel Live! 1 episode as Self
2025		The Jennifer Hudson Show 1 episode as Self
2025		The Late Show with Stephen Colbert 1 episode as Self
2025		The Kelly Clarkson Show 1 episode
2025		The Pitt 15 episodes as Dr. Michael 'Robby' Robinavitch

2021

36 episodes as Harry Wilson

2019

8 episodes as Daniel Calder

2018

1 episode as Ivan

2017

1 episode as Self

2016

1 episode as Lewis Alcindor

2015

1 episode as Thomas Nast

2014		The Librarians 23 episodes as Flynn Carsen
2014		Phineas and Ferb 1 episode as Martin the News Vendor (voice)

2013

1 episode as Dr. Evans

2011		Falling Skies 52 episodes as Thomas 'Tom' Mason
2011		Conan 1 episode as Self

2006

1 episode

2005

1 episode as Self

2004		The Tony Danza Show 1 episode as Self - Guest
2004		Good Day Live 1 episode as Self
2004		The View 1 episode as Self
2004		The Daily Show 1 episode as Self

2003

4 episodes as Self

2000

1 episode as Self - Cameo (uncredited)

1999

1 episode as Self - Nominee

1996

1 episode

1995

1 episode as Jeffrey Rosen

1994

249 episodes as John Carter

Writing

2025

2 episodes … Writer

2022

1 episode … Writer

2016

2 episodes … Writer

Production

2025

15 episodes … Executive Producer

2014

42 episodes … Executive Producer

2011

42 episodes … Producer

Directing

2021

5 episodes … Director

2015		The Librarians 5 episodes … Director
2015		Falling Skies 1 episode … Director