Television – Series Regular

• “How I Met Your Mother” – Barney Stinson (2005-)
• “Stark Raving Mad” – Henry McNeeley (1999-2000)
• “Doogie Howser, M.D.” – Douglas ‘Doogie’ Howser (1989-1993)

Television – Guest Appearances

• “Glee” – Bryan Ryan (2009)
  - Dream On
• “The Penguins of Madagascar” – Dr Blowhole (2009)
  - Dr Blowhole’s Revenge
• “Carrie Underwood: An All-Star Holiday Special” – Ace (2009)
• “Batman: The Brave & The Bold” – The Music Meister (2009)
  - Mayhem of the Music Meister (voice)
• “Family Guy” – Barney (2007 + 2009)
  - No Chris Left Behind (voice)
  - Peter’s Progress (voice)
• “Jack & Bobby” – Prof. Preston Phelps (2005)
  - Querida Grace
• “Numb3rs” – Ethan Burdick (2005)
  - Prime Suspect
• “Law & Order: Criminal Intent” – John Tagman (2004)
  - Want
• “Boomtown” – Peter Corman (2003)
  - Monster’s Brawl
• “Touched by an Angel” – Jonas (2002)
  - The Princeless Bride
• “Ed” – Joe Baxter (2001)
  - Replacements
• “Son of the Beach” – Loverboy (2001)
  - Queefer Madness
• “Will & Grace” – Bill (2000)
  - Girls, Interrupted
• “Homicide: Life on the Street” – Alan Schack (1997)
  - Valentine’s Day
• “The Outer Limits” – Howie Morrison (1996)
  - From Within
• “Murder, She Wrote” – Tommy Remsen (1993)
  - Lone Witness
• “Quantum Leap” – Mike Hammond (1993)
  - Return of the Evil Leaper – October 8, 1956
• “Roseanne” – Dr. Doogie Howser (1992)
  - Less Is More (uncredited)
• “Blossom” – The ‘Charming’ Derek Slade (1991)
  - Blossom – A Rockumentary
• “B.L. Stryker” (1989)
  - Blues for Buder