In an interview on Rachael Ray: Episode #3.100 (2009) Renée Zellweger said Winnipeg was so cold during filming (as low as -55° C), the camera could only run for up to 1 minute per take, to prevent the heat generated by the camera's electric motor from cracking the icy lens.
Director Jonas Elmer left the film halfway during post-production. Disputes between him and producers led to the exit. He originally aimed for the film to appeal to a mature audience, which the producers originally supported. When they changed their mind mid-way during production, Elmer decided to leave the film behind. He has deliberately decided not to work in the US again.
J.K. Simmons' character ordered a "Maker's Mark, up" at the bar. That was what Ellen Page's character said she wanted during the adoption interview in the movie Juno - in which J.K. Simmons played Juno's father.