
17Hallmark films
3 at Christmas
across 16 rated films
Mostly standard issue
Best reviewed
Most recent
Gregory Harrison is the kind of actor Hallmark keeps in the ensemble rather than out front. Across 17 films since 2012 he has never once been the top-billed lead, and that is no knock. His best work runs through the "Signed, Sealed, Delivered" world, where the same four faces keep turning up beside him: Eric Mabius, Kristin Booth, Yan-Kay Crystal Lowe and Geoff Gustafson each share nine titles with him. That franchise is also his ceiling. "To the Altar" from 2018 sits at 8.2, his best-reviewed, with "The Vows We Have Made" and "Higher Ground" close behind. He plays it straight and tends toward big-city stories, not snowy small towns, and Christmas is rare for him at just three films. If you love that postal-detective universe, he is part of its furniture.
Gregory Neale Harrison 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 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, Harrison 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.
Across 17 films, Gregory returns to Christmas and is often set in the big city.
9 films
Gregory has shared more Hallmark sets with Eric Mabius than with anyone else.
9 films, one enduring on-screen pairing.

Gregory’s most frequent on-screen partner is Eric Mabius, with 9 films together.
Gregory is a recurring face in Signed, Sealed, Delivered.
The corners of the Hallmark universe Gregory keeps turning up in. Each one is a full ranked guide.

Best-reviewed of the 17, at 8.2/10
8.2
Lowest-rated of the 17 — every filmography has one
5.5
The strangest of the bunch — 5/10 on our weirdness scale
A quick look at Gregory’s Hallmark run — headshot and the posters fans know best.
Where else you might recognise Gregory from — notable roles outside the Hallmark catalogue.
The cast and crew Gregory keeps ending up on set with — the regular faces you’ll recognise from one film to the next. Bigger circle, more films together.
Average 7.1 across 16 rated movies — each dot is one film.
Gregory’s filmography, credits and ratings are compiled from IMDb, TMDB and Wikipedia, then checked and tidied by the Talking Hallmark team. Last updated August 2026.
Catalogue curated by Alanna of Talking Hallmark. About the project
Talking Hallmark
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