Film

No.	Year	Title	Role	Vote Average
1	1941	Buzzy and the Phantom Pinto	Lucas	0
2	1956	The Harder They Fall	Minor Role (uncredited)	71
3	1956	Hold Back The Night	Marine (uncredited)	63
4	1957	The Big Land	Billy Tyler (uncredited)	64
5	1957	The Crooked Circle	Joe Kelly	60
6	1957	Bombers B-52	MSgt. Darren McKine	56
7	1958	The Notorious Mr. Monks	Dan Flynn	0
8	1958	Tank Battalion	Sgt. Brad Dunne	40
9	1961	Frontier Uprising	Lt. Kilpatrick (as Don O'Kelly)	48
10	1962	Shootout at Big Sag	Fargo	0
11	1967	The Hostage	Bull (as Don O'Kelly)	46
12	2001	A Mother's Fight for Justice	Passing Man	28

Television

No.	Year	Title	Role	Vote Average
1	1955	Highway Patrol	Paul Lawson	58
2	1957	Maverick	Jett	68
3	1959	Black Saddle	Harry Briggs	60
4	1959	The Twilight Zone	Monk	84