
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).
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Max Duval
Dr. Bartholomew (voice)
Leland McKenzie
Russ DeKuyper
Mr. Westfall
Dr. Copper
Nicholas Cogliostro (voice)
Barbwire Salesman
Motel Receptionist
J. Edgar Hoover
Leonard Driscoll
Abe
Cromwell
Coy LaHood
Dr. Kipness
Henry Sears
Secretary of Defense
David Davis
Dr. Robert Allenby
Dr. Lee
Claude Estee
Dr. Welbeck
Dr. Nielsen
Leland McKenzie
Spengler
Trevor Isley
Lehman
Harvey Koster
Dr. Brennerman
Dr. John Ellis
Leland McKenzie
Louis B. Mayer
Aslaksen
Accountant (uncredited)
Barnes
Henry L. Stimson
Jack Warner
Leland McKenzie
Master Bryant
Gen. Dwight D. Eisenhower
Arthur Cambridge
President Harry S. Truman
Peter Bailey
J. Edgar Hoover
Leonard Driscoll
Self
Dr. Morton Freeman
Self
Cogliostro
President Ulysses S. Grant
Warden James Johnston
Self
Judge Russell R. Leggett
Gen. Dwight D. Eisenhower
Hunter Burgess
Riley Hallihan
Jerry Arnst
Cogliostro
Edwin Stanton
Father
The Ancient Mariner (voice)
Self (archive footage)