Gregory Harrison
Gregory Neale Harrison (born May 31, 1950) is an American actor. He is known primarily for his roles as Dr. George Alonzo "Gonzo" Gates, the young surgeon assistant of Dr. Trapper John McIntyre (played by Pernell Roberts) on the CBS series Trapper John, M.D. (1979–86), and as ruthless business tycoon Michael Sharpe in the CBS series Falcon Crest (1989–1990). Since 2015, he has played Joe O'Toole, father of Oliver, in the Hallmark Channel expansion films of Signed, Sealed and Delivered. From 2020 to 2024, he assumed the role of Gregory Chase on General Hospital.
Acted in
Jimmy and Carolyn
2022
The Nine Kittens of Christmas
2021
as Chief Sam
Signed, Sealed, Delivered: The Vows We Have Made
2021
as Joe O’Toole
Sweet Carolina
2021
as Pete
The Vanished
2020
as Dr. Bradley
Love, Fall & Order
2019
as Hank Hart
Signed, Sealed, Delivered: To the Altar
2018
as Joe O'Toole
9-1-1
2018
as Phillip Buckley
Signed, Sealed, Delivered: Home Again
2017
as Joe O'Toole
Fair Haven
2017
as Doctor Gallagher
Signed, Sealed, Delivered: Higher Ground
2017
as Joe O’Toole
My Christmas Love
2016
as Tom Baker
Signed, Sealed, Delivered: Lost Without You
2016
as Joe O’Toole
Chesapeake Shores
2016
as Thomas O'Brien
Signed, Sealed, Delivered: One in a Million
2016
as Joe O'Toole
Signed, Sealed, Delivered: Truth Be Told
2015
as Joe O'Toole
Cloudy With a Chance of Love
2015
as Grant
The Nine Lives of Christmas
2014
as Chief Sam
Reckless
2014
as Dec Fortnum
The M Word
2014
After All These Years
2013
as David
Undercover Bridesmaid
2012
as Mr. Thompson
Ringer
2011
Body of Proof
2011
as Dr. Cameron Fischer
Rizzoli & Isles
2010
as Ron Hanson
Hot in Cleveland
2010
as Dave
The Middle
2009
as Bennett Brooks
Drop Dead Diva
2009
as Brandon Tharpe
Maneater
2009
as Teddy Alpert
Love n' Dancing
2009
Au Pair 3: Adventure in Paradise
2009
as Oliver Caldwell
Castle
2009
as Danny Valentine
Give 'em Hell, Malone
2009
as Whitmore
Not Quite Hollywood
2008
as Self
Psych
2006
as Ted Lomax
Reunion
2005
Joey
2004
as Dean
One Tree Hill
2003
as Paul Norris
NCIS
2003
as Roland Ebbakey
Hollywood's Magical Island: Catalina
2003
Miracles
2003
Au Pair II
2001
as Oliver Caldwell
First Target
2000
as President Jonathan Hayes
Ed
2000
as Nick Stanton
Strong Medicine
2000
as Dr. Randolf Kilner
Law & Order: Special Victims Unit
1999
as Nathan Speer
Safe Harbor
1999
as John Loring
Judging Amy
1999
as Tom Gillette
Au Pair
1999
as Oliver Caldwell
First Daughter
1999
as President Jonathan Hayes
Murder at 75 Birch
1999
as Rick Todson
Air Bud: Golden Receiver
1998
as Dr. Patrick Sullivan
Running Wild
1998
as Matt Robinson
When Secrets Kill
1997
Dark Skies
1996
as Old John Loengard
Summer of Fear
1996
as Mr. Marshall
It's My Party
1996
as Brandon Theis
Hard Evidence
1995
as Trent Turner
Nothing Lasts Forever
1995
as Dr. Benjamin 'Ben' Wallace
Nothing Lasts Forever
1995
as Dr. Benjamin 'Ben' Wallace
New York News
1995
as Jack Reilly
500 Nations
1995
The Outer Limits
1995
as Dr. Larry Chambers
A Dangerous Affair
1995
as Robert Kenzer
A Christmas Romance
1994
as Brian Harding
Mortal Fear
1994
as Philip Montgomery
Touched by an Angel
1994
as Pete Taylor
Touched by an Angel
1994
as Richard
Touched by an Angel
1994
as Don Costello
Lies of the Heart: The Story of Laurie Kellogg
1994
as Bruce Kellogg
Sudden Fury
1993
as Tom Kelley
Caught in the Act
1993
as Scott McNally
Cadillac Girls
1993
as Sam
Body Chemistry II: Voice of a Stranger
1992
as Dan
Duplicates
1992
as Bob Boxletter
Breaking the Silence
1992
as Paul Danner
Split Images
1992
as Robbie Daniels
Bare Essentials
1991
as William 'Bill' Buzell owner of Luhana
Angel of Death
1990
as Gary Nicholson
The Family Man
1990
as Jack Taylor
Night of 100 Stars III
1990
as Self
Dangerous Pursuit
1990
as John
Red River
1988
as Cherry Valance
Hot Paint
1988
as Willie
North Shore
1987
as Chandler
The Nativity
1987
as Joseph (voice)
Fresno
1986
as Torch
Picnic
1986
as Hal Carter
Oceans of Fire
1986
as Ben Laforche
Pee-wee's Playhouse
1986
as Conky 2000 (voice) / Knucklehead (voice)
Seduced
1985
as Mike Riordan
Night of 100 Stars II
1985
as Self
Razorback
1984
as Carl Winters
The Hasty Heart
1983
as Sgt. Lachlen McLachlen
The Fighter
1983
as Merle Banks
Falcon Crest
1981
as Michael Sharpe
For Ladies Only
1981
as John Phillips
Enola Gay: The Men, the Mission, the Atomic Bomb
1980
as Capt. Bob Lewis
The Women's Room
1980
as Ben Volper
Kraft Salutes Disneyland's 25th Anniversary
1980
as Self
Trapper John, M.D.
1979
as George Alonzo 'Gonzo' Gates
The Best Place to Be
1979
as Rick Jawlosky
Centennial
1978
as Levi Zendt
The Gathering
1977
as Bud Jr.
Logan's Run
1977
as Logan
Fraternity Row
1977
as Zac
Battle of the Network Stars
1976
Jim, the World's Greatest
1975
as Jim Nolan
Trilogy of Terror
1975
as Arthur Moore
The Harrad Experiment
1973
as Student
M*A*S*H
1972
as Lt. Tony Baker