Film

No.	Year	Title	Role	Vote Average
1	1974	The Stranger Who Looks Like Me	Adoptee #3	60
2	1974	Hurricane	Jim	49
3	1976	The Last of Mrs. Lincoln	Lewis Baker	0
4	1977	Man From Atlantis	Mark Harris	80
5	1977	Man From Atlantis: The Death Scouts	Mark Harris	70
6	1977	Man From Atlantis: Killer Spores	Mark Harris	0
7	1977	Man From Atlantis: The Disappearances	Mark Harris	70
8	1980	Enola Gay: The Men, the Mission, the Atomic Bomb	Col. Paul Tibbets	57
9	1982	Cry for the Strangers	Dr. Brad Russell	70
10	1984	Vamping	Harry Baranski	28
11	1986	Strong Medicine	Dr. Andrew Jordan	70
12	1986	From Here to Maternity	Henderson	0
13	1987	The Beach Boys: 25 Years Together - A Celebration In Waikiki	Self	0
14	1988	Your Alcohol I.Q.	Self	0
15	1988	14 Going on 30	Actor in Black and White Movie	54
16	1988	Unholy Matrimony	John Dillman	87
17	1988	Too Good to Be True	Richard Harland	33
18	1990	Murder C.O.D.	Steve Murtaugh	78
19	1990	Children of the Bride	John	68
20	1991	Daddy	Oliver Watson	44
21	1992	ABC Saturday Morning Preview Special	Frank Lambert	0
22	1995	Texas	Stephen Austin	50
23	1996	Dallas: J.R. Returns	Bobby Ewing	54
24	1997	Heart of Fire	Max Tucker	50
25	1997	What's Right with America	Self	0
26	1998	Dallas: War of The Ewings	Bobby Ewing	53
27	1998	Rusty: A Dog's Tale	Cap the Dog (voice)	58
28	1999	Don't Look Behind You	Jeff Corrigan	50
29	2000	Perfect Game	Bobby Geiser	63
30	2004	Dallas Reunion: Return to Southfork	Self	0
31	2006	Desolation Canyon	Tomas 'Swede' Lundstrom	60
32	2006	Falling in Love with the Girl Next Door	James Connolly	59
33	2007	Walk Hard: The Dewey Cox Story	Patrick Duffy (uncredited)	66
34	2009	Love Takes Wing	Mayor Evans	68
35	2009	Everything Is Terrible! The Movie	Self (archive footage)	69
36	2010	Healing Hands	Uncle Norman	66
37	2010	You Again	Richie	63
38	2010	Pony Excess	Narrator	72
39	2016	Hotel Dallas	Mr. Here/Himself	70
40	2017	The Christmas Cure	Bruce Turner	58
41	2017	Trafficked	Christian	67
42	2018	Christmas with a View	Frank Haven	58
43	2019	The Mistletoe Secret	Mack	67
44	2019	Random Acts of Christmas	Howard	62
45	2019	April, May and June	Patrick Duffy	77
46	2020	Once Upon a Main Street	Elder	62
47	2021	Doomsday Mom	Larry Woodcock	54
48	2021	Lady of the Manor	Grayson Wadsworth	58
49	2021	The Christmas Promise	Pops	59
50	2024	Lepattanó	Mecénás	0
51		Bring Back... Dallas	Self	0

Television

No.	Year	Title	Role	Vote Average
1	1948	Bambi-Verleihung	Self	90
2	1952	Today	Self	58
3	1961	The Mike Douglas Show	Self	54
4	1962	The Tonight Show Starring Johnny Carson	Self	75
5	1975	Switch	Sgt. Musial	67
6	1976	Charlie's Angels	Bill Cord	67
7	1976	Battle of the Network Stars		72
8	1977	Auf los geht's los	Self	0
9	1977	Man from Atlantis	Mark Harris	64
10	1977	The Love Boat	Ralph Sutton	63
11	1978	Dallas	Bobby Ewing	69
12	1979	Knots Landing	Bobby Ewing	69
13	1980	Barbara Mandrell and the Mandrell Sisters	Self	50
14	1982	Hotel		68
15	1985	Alice in Wonderland	Goat	69
16	1986	Strong Medicine	Dr. Andrew Jordan	0
17	1987	The Bold and the Beautiful	Stephen Logan	55
18	1987	Dolly	Self	0
19	1991	Step by Step	Frank Lambert	77
20	1993	Diagnosis: Murder	Wayde Garrett	71
21	1994	Touched by an Angel	Mike	72
22	1995	The Mrs Merton Show	Self	64
23	1996	E! True Hollywood Story		81
24	1997	The View	Self	45
25	1999	Family Guy	Jack / Salesman / Teacher (voice)	74
26	1999	Family Guy	Bobby Ewing	74
27	1999	Twice in a Lifetime	Peter Hogan / Father Daniel Morrissey	55
28	2001	Good Day Live	Self	30
29	2001	Reba		65
30	2001	Justice League	Steve Trevor (voice)	82
31	2001	Justice League	Steve Trevor / Flagship Pilot #1 (voice)	82
32	2003	NCIS	Ret. Lieutenant Commander Jack Briggs	76
33	2004	Willkommen bei Carmen Nebel	Self	40
34	2005	Bring Back...	Self - Bobby Ewing	60
35	2005	The Reichen Show	Self	48
36	2007	Tim and Eric Awesome Show, Great Job!	Self	74
37	2008	Bingo America		0
38	2009	Willkommen bei Mario Barth	Self	60
39	2009	Party Down	Patrick Duffy	75
40	2012	Dallas	Bobby Ewing	70
41	2013	The Fosters	Robert Quinn Sr.	76
42	2014	Welcome to Sweden	Wayne	62
43	2016	American Housewife	Marty	77
44	2018	Station 19	Terry	82
45	2018	The Cool Kids	Gene	55
46	2019	All Rise	Ed Parker	75
47	2020	Stars in the House	Self	0
48	2021	On the Verge	Gene	48