Kevin Tighe (b. Jon Kevin Fishburn; August 13, 1944) is an American character actor primarily known for his roles on television. Tighe is best known for his role as Roy DeSoto, a senior paramedic, on the NBC series Emergency! (1972–77). He and Randolph Mantooth, his partner in the series, have remained close friends. In the 2000's he played Anthony Cooper the father of John Locke on the ABC series Lost. Description above from the Wikipedia article Kevin Tighe, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Greek
The Bedford Diaries
Hey Joel
Daria
The Wrong Coast
Law & Order: Special Victims Unit
Private Practice
Medium
Law & Order: Criminal Intent
Trust Me
Dream Corp LLC
Physical
Body of Proof
Madam Secretary
Goliath
The Offer
Law & Order
Grey's Anatomy
American Dad!
Garfunkel and Oates
The Closer
Paradise
Undeclared
Good American Family
Deli Boys
Karl Benson
Terry Seville
Malik
Winston
Flipper Boy
Mohammed
Salesman / Vince McCormick
College Boy 3
McKenzie
Kevin
Don
Andy
Psycho Pirate / Hawkman (voice)
Morgan Midwood
Psycho Pirate / Charles Halstead / Hawkman (voice)
Psycho Pirate / Charles Halstead (voice)
Day Care Teacher (voice)
Dax / Mother / Photographer
Ranklin (voice)
David Weber
Charles "Upchuck" Ruttheimer III (voice)
The Riddler / Edward Nigma (voice)
Advisor / Charles Halstead (voice)
Joseph's friend
Fletcher
Max
Self / Karl from Handi-World
Ryan