2024

(1 episode) as Wilzig

2023

(1 episode) as Brainiac (voice)

2020

(1 episode) as Self - Guest

2019		Evil (50 episodes) as Dr Leland Townsend
2019		The Name of the Rose (8 episodes) as Abo of Fossanova - The Abbot

2015

(3 episodes) as Narrator

2014

(2 episodes) as Morton Norton

2012

(7 episodes) as Cayden James

2011

(103 episodes) as Harold Finch

2010

(1 episode) as Andy Fitzgerald

2009

(1 episode) as Self

2007

(13 episodes) as Ben Linus

2006

(1 episode) as Self

2005

(1 episode) as Marty Manning

2004		Lost (1 episode) as Ben (8 episodes) as Henry Gale (70 episodes) as Benjamin Linus
2004		Best Week Ever (1 episode) as Self

2002

(1 episode) as Stuart Wesmar

2001		Law & Order: Criminal Intent (1 episode) as Gerry Rankin
2001		The Education of Max Bickford (1 episode)

1999

(1 episode) as Allan Shaye

1997

(1 episode) as William Hinks (voice) (5 episodes) as William Hinks

1993

(1 episode) as Oliver Martin

1951

(1 episode) as Arnold Dudley