Greg Morris
Acting
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.
Firing Squad
Private Jacob Dorn
Mission: Impossible - The Golden Serpent
Barney Collier
Crisis in Mid-Air
Brian Haley
Flight to Holocaust
Dr. Jeff Evans
Countdown at Kusini
Red Salter
Under the Law Part II: 3 Days in the County Jail
Narrator
Mitzi & 100 Guys
Self
Gold
The All Star Spangled Mission
Killer by Night
Capt. George Benson
The Grand Opening of Walt Disney World
Self
Mission: Impossible - The Falcon
Barney Collier
Mission: Impossible - The Controllers
Barney Collier
Mission: Impossible vs. the Mob
Barney Collier
Mission: Impossible - The Bunker
Barney Collier
Evan's Corner
Narrator
The Caterpillar and the Wild Animals
The Dean Martin Christmas Show
Self (uncredited)
Mission: Impossible - The Slave
Barney Collier
The Doomsday Flight
Balaban, FBI Agent
Mission: Impossible - Old Man Out
Barney Collier
The Sword of Ali Baba
Yusef
The Lively Set
Highway Patrol Officer
The New Interns
Dr. Pete Clarke