Gallagher has directed documentaries for
History Television,
CBC,
BBC,
The History Channel the
Food Network and
W Network. In 2000, he won two
Golden Sheaf Awards,
Best of Festival and Best
Short Subject, at the
Yorkton Film Festival for the film
Cass. In 2006 he was nominated for a
Gemini Award for Best History Documentary Program for the CBC documentary
Vimy: Carved in Stone. In 2013 Gallagher's documentary
Grinders was nominated for the
Canadian Screen Award Best Direction in a Documentary Program or Series. In 2019, Gallagher won the $50,000
Rogers Audience Award for Best Canadian Documentary for
Prey at the
Hot Docs Canadian International Documentary Festival and the
DGC Special Jury Prize - Canadian Feature Documentary. In 2019, he also won
Directors Guild of Canada's award for Best Picture Editing - Documentary and the Allan King Award for Excellence in Documentary for
Prey. In 2020
Prey was nominated for
Best Feature Length Documentary and
Best Editing in a Feature Documentary at the
8th Canadian Screen Awards. His 2021 television documentary
Dispatches from a Field Hospital was a nominee for the
Donald Brittain Award at the
10th Canadian Screen Awards in 2022. ==Filmography==