Kirk trained as an actor at York University in its Theatre Performance program.
Most recently, Kirk was seen in Voices of Peace, Dreams of Home, at St. Andrew’s Church in Toronto, alongside CBC Radio Personalities Foreign correspondent Brian Stewart and classical music expert Rick Phillips. The previous year, he also appeared in Voices of War, Dreams of Peace with the same team.
For three seasons, Kirk was joyfully not seen, being ensconced in an eight-foot-tall green dragon puppet known as Dudley. While Kirk played Dudley, the show won a 1997 Gemini award for Best Children's or Youth Fiction or Non-Fiction Program or Series.
Kirk also appeared in CBC’s Chasing Cain, Traders and Spynet; Showtime’s Street Time and Queer as Folk; Fox’s Class of ’96; as well as Little Mosque on the Prairie; Real Kids, Real Adventures; Kung Fu; Women of Windsor; Katts & Dog; and War of the Worlds.
On film, Kirk has appeared in 20th Century Fox's Trapped in Paradise; in the short films Brick Red for Tiger Lily Films, Cal Coons’ Day Pass, Ines Buchli’s Exposure, Alexandra Gill’s Harriet Loves, and in the lead of the critically acclaimed short film, Like A Dream: The Mario Lanza Story, directed and written by John Martins-Manteiga, which screened at the Cannes Film Festival.