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Gregory Neale Harrison is an American actor. He is known for his role as Chandler in the 1987 cult favorite North Shore and as Dr. George Alonzo "Gonzo" Gates, the young surgeon assistant of Dr. Trapper John MacIntyre on the CBS series Trapper John, M.D. (1979–86). Since 2015, he has played Joe O'Toole, father of Oliver, in the Hallmark Channel expansion films of Signed, Sealed and Delivered.
Birth Name
Gregory Neale Harrison
Born
Wednesday, 31 May 1950
Actor Filmography
| Title | Character | Year |
|---|
| Jimmy and Carolyn | Jimmy | 2023 |
| The Nine Kittens of Christmas | Chief Sam / Sam | 2021 |
| Signed, Sealed, Delivered: The Vows We Have Made | Joe O’Toole / Joe | 2021 |
| Sweet Carolina | Pete | 2021 |
| The Vanished | Dr. Bradley | 2020 |
| Love, Fall & Order | Hank Hart | 2019 |
| Signed, Sealed, Delivered: To the Altar | Joe O'Toole | 2018 |
| 9-1-1 | Phillip Buckley | 2018 |
| Signed, Sealed, Delivered: Home Again | Joseph O'Toole / Joe O'Toole | 2017 |
| Fair Haven | Doctor Gallagher | 2017 |
Actor Filmography
| Title | Character | Year |
|---|
| Jimmy and Carolyn | Jimmy | 2023 |
| The Nine Kittens of Christmas | Chief Sam / Sam | 2021 |
| Signed, Sealed, Delivered: The Vows We Have Made | Joe O’Toole / Joe | 2021 |
| Sweet Carolina | Pete | 2021 |
| The Vanished | Dr. Bradley | 2020 |
| Love, Fall & Order | Hank Hart | 2019 |
| Signed, Sealed, Delivered: To the Altar | Joe O'Toole | 2018 |
| 9-1-1 | Phillip Buckley | 2018 |
| Signed, Sealed, Delivered: Home Again | Joseph O'Toole / Joe O'Toole | 2017 |
| Fair Haven | Doctor Gallagher | 2017 |
| Signed, Sealed, Delivered: Higher Ground | Joe O’Toole / Joe O'Toole | 2017 |
| My Christmas Love | Tom / Tom Baker | 2016 |
| American Housewife | Dan | 2016 |
| Signed, Sealed, Delivered: Lost Without You | Joe O'Toole / Joe O’Toole | 2016 |
| Chesapeake Shores | Thomas O'Brien | 2016 |
| Signed, Sealed, Delivered: One in a Million | Joe O'Toole | 2016 |
| Interviews from the Dressing Room | Self | 2016 |
| Signed, Sealed, Delivered: Truth Be Told | Joe O'Toole | 2015 |
| Cloudy with a Chance of Love | Grant / Grant Marshall | 2015 |
| The Nine Lives of Christmas | Chief Sam | 2014 |
| Reckless | Dec Fortnum | 2014 |
| The M Word | Mack Riley | 2014 |
| After All These Years | David Larabee / David | 2013 |
| Home & Family | Self | 2012 |
| Undercover Bridesmaid | Mr. Thompson | 2012 |
| Outside the Box | Thorn | 2011 |
| Ringer | Tim Arbogast | 2011 |
| Body of Proof | Dr. Cameron Fischer | 2011 |
| Rizzoli & Isles | Ron Hanson | 2010 |
| Hot in Cleveland | Dave | 2010 |
| Accidental Icon: The Real Gidget Story | Self | 2010 |
| The Fuzz | Lt. Donovan | 2010 |
| The Middle | Bennett Brooks | 2009 |
| Drop Dead Diva | Brandon Tharpe | 2009 |
| Maneater | Teddy Alpert | 2009 |
| Love N' Dancing | Uncle Carl | 2009 |
| Au Pair 3: Adventure in Paradise | Oliver Caldwell | 2009 |
| Castle | Danny Valentine | 2009 |
| Malone | Whitmore | 2009 |
| Not Quite Hollywood: The Wild, Untold Story of Ozploitation! | Self | 2008 |
| Psych | Ted Lomax | 2006 |
| Reunion | Russell Brewster | 2005 |
| CSI: NY | Roland Carson | 2004 |
| Rodney | Duke Lewis | 2004 |
| Joey | Dean | 2004 |
| One Tree Hill | Paul Norris | 2003 |
| Hollywood's Magical Island: Catalina | Third Generation Islander / Self - Actor | 2003 |
| NCIS | Captain Roland Ebbakey | 2003 |
| Miracles | Sheriff Ed Prescott | 2003 |
| The Kid Stays in the Picture | Self | 2002 |
| First Shot | President Jonathan Hayes | 2002 |
| Au Pair II | Oliver Caldwell | 2001 |
| First Target | President Jonathan Hayes | 2000 |
| Ed | Nick Stanton | 2000 |
| Strong Medicine | Dr. Randolf Kilner | 2000 |
| Safe Harbor | John Loring | 1999 |
| Law & Order: Special Victims Unit | Nathan Speer | 1999 |
| Judging Amy | Tom Gillette | 1999 |
| Au Pair | Oliver Caldwell | 1999 |
| First Daughter | President Jonathan Hayes | 1999 |
| Maggie Winters | Mr. Wiehe | 1998 |
| Air Bud: Golden Receiver | Dr. Patrick Sullivan | 1998 |
| Running Wild | Matt Robinson | 1998 |
| The 51st Annual Tony Awards | Self - Performer | 1997 |
| When Secrets Kill | Greg Newhall | 1997 |
| Dead Man's Gun | Boucher / Trapper | 1997 |
| Dark Skies | Old John Loengard | 1996 |
| Summer of Fear | Mr. Marshall | 1996 |
| It's My Party | Brandon Theis | 1996 |
| Hard Evidence | Trent Turner | 1995 |
| Nothing Lasts Forever | Dr. Benjamin 'Ben' Wallace | 1995 |
| New York News | Jack Reilly | 1995 |
| 500 Nations | Self - Narrator | 1995 |
| The Outer Limits | Dr. Larry Chambers | 1995 |
| A Dangerous Affair | Robert Kenzer | 1995 |
| A Christmas Romance | Brian Harding | 1994 |
| Mortal Fear | Philip Montgomery | 1994 |
| Touched by an Angel | Pete Taylor / Don Costello / Richard | 1994 |
| Lies of the Heart: The Story of Laurie Kellogg | Bruce Kellogg | 1994 |
| Caught in the Act | Scott McNally | 1993 |
| Cadillac Girls | Sam | 1993 |
| A Family Torn Apart | Tom Kelley | 1993 |
| Duplicates | Bob Boxletter | 1992 |
| Breaking the Silence | Paul Danner | 1992 |
| Split Images | Robbie Daniels | 1992 |
| Body Chemistry II: The Voice of a Stranger | Dan | 1991 |
| One on One with John Tesh | Self | 1991 |
| Sisters | Daniel Albright | 1991 |
| Bare Essentials | William 'Bill' Buzell owner of Luhana / Bill Buzell | 1991 |
| True Detectives | Host | 1990 |
| Angel of Death | Gary Nicholson | 1990 |
| The Family Man | Jack Taylor | 1990 |
| Dangerous Pursuit | 1990 | |
| Red River | Cherry Valance | 1988 |
| Hot Paint | Willie | 1988 |
| North Shore | Chandler | 1987 |
| Happy 100th Birthday, Hollywood | Self | 1987 |
| The Nativity | Joseph (voice) / Joseph | 1987 |
| Fresno | Torch | 1986 |
| Pee-wee's Playhouse | Knucklehead / Conky / Mr. Knucklehead / Conky, the Robot | 1986 |
| Oceans of Fire | Ben Laforche | 1986 |
| The Greatest Adventure: Stories from the Bible | Joseph | 1985 |
| Seduced | Mike Riordan | 1985 |
| Night of 100 Stars II | Self | 1985 |
| Razorback | Carl Winters | 1984 |
| The Hasty Heart | Sgt. Lachlen McLachlen | 1983 |
| Falcon Crest | Michael Sharpe | 1981 |
| For Ladies Only | John Phillips | 1981 |
| Enola Gay: The Men, the Mission, the Atomic Bomb | Captain Bob Lewis / Capt. Bob Lewis | 1980 |
| The Women's Room | Ben Volper | 1980 |
| CBS Schoolbreak Special | Self | 1980 |
| The Toni Tennille Show | Self | 1979 |
| Trapper John, M.D. | George Alonzo 'Gonzo' Gates / Dr. George Alonzo 'Gonzo' Gates | 1979 |
| Centennial | Levi Zendt | 1978 |
| The Gathering | Bud Jr. | 1977 |
| Logan's Run | Logan | 1977 |
| Fraternity Row | Zac Sterling / Zac | 1977 |
| Wonder Woman | First Lieutenant - Army Medical Corps | 1975 |
| Jim, the World's Greatest | Jim Nolan | 1975 |
| Trilogy of Terror | Arthur Moore | 1975 |
| The Harrad Experiment | Student | 1973 |
| Barnaby Jones | Ritchie Ridder | 1973 |
| M*A*S*H | Lt. Tony Baker | 1972 |
| The Mike Douglas Show | Himself - Co-Host / Himself - Actor | 1961 |
Director Filmography
| Title | Year |
|---|
| Touched by an Angel | 1994 |
| Trapper John, M.D. | 1979 |
Producer Filmography
| Title | Year |
|---|
| Two Guys One Truck | 2014 |
| The Tower | 1993 |
| Red River | 1988 |
| Hot Paint | 1988 |
| Spot Marks the X | 1986 |
| Oceans of Fire | 1986 |
| Seduced | 1985 |
| Samson and Delilah | 1984 |
| The Hasty Heart | 1983 |
| Thursday's Child | 1983 |
| For Ladies Only | 1981 |
