Maverick
1957 · Jett
The Twilight Zone
1959 · Monk
The Wild Wild West
1965 · Poavey
Highway Patrol
1955 · Paul Lawson
Black Saddle
1959 · Harry Briggs
The Harder They Fall
1956 · Minor Role (uncredited)
Bombers B-52
1957 · MSgt. Darren McKine
The Big Land
1957 · Billy Tyler (uncredited)
Stampede at Bitter Creek
1962 · Jed
The Hostage
1967 · Bull (as Don O'Kelly)
Tank Battalion
1958 · Sgt. Brad Dunne
A Mother's Fight for Justice
2001 · Passing Man
The Crooked Circle
1957 · Joe Kelly
Frontier Uprising
1961 · Lt. Kilpatrick (as Don O'Kelly)
Shootout at Big Sag
1962 · Fargo
Hold Back The Night
1956 · Marine (uncredited)
The Notorious Mr. Monks
1958 · Dan Flynn
Buzzy and the Phantom Pinto
1941 · Lucas
