[2] McMullan grew up in Langley, British Columbia as an avid basketball player.
McMullan has worked on several projects with the National Film Board of Canada.
[4] In addition to My Prairie Home, their prior films Mise en Scène and Deadman were made for the NFB; they first met Spoon when they wanted to secure rights to one of Spoon's songs as background music for Deadman.
[5] My Prairie Home competed in the World Cinema Documentary program at the 2014 Sundance Film Festival,[4] and was nominated for the Canadian Screen Award for Best Feature Length Documentary at the 2nd Canadian Screen Awards.
[9] In 2023, McMullan released Swan Song, a documentary film profiling Karen Kain as she prepares to retire from her career in dance.