
Francis Gregory Alan Morris (September 27, 1933 – August 27, 1996) was an American actor. He was best known for portraying Barney Collier on Mission: Impossible and Lt. David Nelson on Vega$.
Description above from the Wikipedia article Greg Morris, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Mitzi & 100 Guys
1975 · as Self

Killer by Night
1972 · as Capt. George Benson

Swing Out, Sweet Land
1970 · as Crispus Attucks

The New Interns
1964 · as Dr. Pete Clarke

The Dean Martin Christmas Show
1968 · as Self (uncredited)

The Doomsday Flight
1966 · as Balaban, FBI Agent

The All Star Spangled Mission
1973

The Lively Set
1964 · as Highway Patrol Officer

Crisis in Mid-Air
1979 · as Brian Haley

The Grand Opening of Walt Disney World
1971 · as Self

Flight to Holocaust
1977 · as Dr. Jeff Evans

Mission: Impossible - Old Man Out
1966 · as Barney Collier

Mission: Impossible vs. the Mob
1969 · as Barney Collier

Mission: Impossible - The Slave
1967 · as Barney Collier

The Sword of Ali Baba
1965 · as Yusef

Mission: Impossible - The Falcon
1970 · as Barney Collier

Mission: Impossible - The Bunker
1969 · as Barney Collier

Countdown at Kusini
1976 · as Red Salter