Film

No.	Year	Title	Role	Vote Average
1	1937	Kathleen Mavourneen	Minor Role	70
2	1941	Smilin' Through	Willie Ainley	60
3	1942	Captains of the Clouds	Fyffe	64
4	1942	Desperate Journey	Squad Leader Lane-Ferris	60
5	1942	Springtime in the Rockies	Travel Clerk (uncredited)	67
6	1943	The Moon Is Down	Bombardier (uncredited)	67
7	1943	Stage Door Canteen	Australian	61
8	1943	Sahara	Osmond 'Ozzie' Bates	72
9	1944	Between Two Worlds	Steamship Clerk (uncredited)	70
10	1944	Marine Raiders	Australian Doctor - Field Hospital	68
11	1945	Tonight and Every Night	David Long	54
12	1945	Molly and Me	Ronnie	64
13	1945	Conflict	Egan	66
14	1946	G.I. War Brides	Harold R. Williams	0
15	1946	Cloak and Dagger	The Englishman	65
16	1947	The Two Mrs. Carrolls	Charles Pennington	66
17	1947	Bulldog Drummond at Bay	Algy Longworth (as Pat O'Moore)	60
18	1947	Moss Rose	George Gilby (uncredited)	64
19	1947	Bulldog Drummond Strikes Back	Algernon 'Algy' Longworth	58
20	1947	The Exile	Cavalier (uncredited)	61
21	1951	The 13th Letter	Intern (uncredited)	55
22	1951	Kind Lady	Constable Orkin	70
23	1951	Thunder on the Hill	Mr. Smithson	65
24	1951	The Son of Dr. Jekyll	Joe Sorelle (uncredited)	40
25	1952	Bwana Devil	Ballinger	47
26	1953	Niagara	Detective (uncredited)	68
27	1953	The Desert Rats	Jim (uncredited)	63
28	1953	Dangerous When Wet	Bob Gerrard (uncredited)	60
29	1954	Khyber Patrol	Buzz Broussard	70
30	1954	Jungle Gents	Alfie Grimshaw	40
31	1956	The Black Whip	Governor	0
32	1957	Trooper Hook	Col. Adam Weaver	66
33	1957	The Unknown Terror	Dr. Willoughby	51
34	1957	Copper Sky	Colonel Thurston	60
35	1958	Blood Arrow	McKenzie	70
36	1958	Desert Hell	Pvt. Corbo	0
37	1963	The Courtship of Eddie's Father	Man in Door (uncredited)	60
38	1964	3 Nuts in Search of a Bolt	Edwards	32
39	1965	The Singular Case of the Plural Green Mustache	Narrator	0
40	1967	How to Succeed in Business Without Really Trying	Media Man No. 1	69
41	1967	The President's Analyst	British Ambassador (uncredited)	58
42	1969	Hello, Dolly!	Officer Gogarty (uncredited)	70
43	1971	The Resurrection of Zachary Wheeler	Martin	54
44	1972	The Mechanic	Old Man	67
45	1973	Frasier, the Sensuous Lion	Worcester	57
46	1976	Law and Order	Father Damian	0
47	1978	Something Queer at the Library	The Judge	0
48	1980	Desperate Voyage	Julian Howard	75
49	1982	The Sword and the Sorcerer	Devereux	55

Television

No.	Year	Title	Role	Vote Average
1	1952	Four Star Playhouse	Police Sergeant	67
2	1959	Rawhide	Matt Novak (as Pat O'Moore)	71
3	1959	The Twilight Zone	Man	85
4	1968	The Name of the Game	Lord Lansdale	68
5	1969	The Courtship of Eddie's Father	Senator Goldrich	60
6	1983	The A-Team	Father O'Malley	75