McCann was in "The Law of Enclosures", with Sarah Polley and Diane Ladd. He appeared with Meryl Streep ("...First Do No Harm"), Nick Nolte ("Affliction") and Chris Farley ("Tommy Boy"). He shared screen time with Brenda Fricker and Miranda Richardson in "Swann" (for which McCann received a Best Performance by an Actor in a Supporting Role Genie nomination), Nicolas Cage in "Trapped in Paradise", Kevin Bacon in "The Air Up There", Sam Waterston in "A House Divided", Peter Weller and Judy Davis in "Naked Lunch" (which garnered a National Film Critics Society award), Brooke Shields and the late Al Waxman in "What Makes a Family", and Kurt Russell in "Miracle". He appeared in the movie "" (made for Canadian TV, December, 1980).