Richard Dysart
Richard Allen Dysart (March 30, 1929 – April 5, 2015) was an American actor. He is best known for his role as senior partner Leland McKenzie in the television series L.A. Law (1986–1994), for which he won a 1992 Primetime Emmy Award as Outstanding Supporting Actor in a Drama Series after four consecutive nominations. In film, he held supporting roles in The Hospital (1971), Being There (1979), The Thing (1982), Mask (1985), Pale Rider (1985) and Wall Street (1987). Description above from the Wikipedia article Richard Dysart, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Columbo
L.A. Law
Batman: The Animated Series
Cannon
All in the Family
Baretta
The Defenders
The Thing
Maude
No Image
CBS Playhouse
Back to the Future Part III
Spawn
Wall Street
Pale Rider
Mask
Hallmark Hall of Fame
The Andros Targets
Hard Rain
Gemini Man
No Image
Doc
Lincoln
Doctors' Hospital
Prophecy
E! True Hollywood Story
Being There
The Falcon and the Snowman
Meteor
The Day of the Locust
Truman
Blood & Orchids