Factual error: In the beginning of the movie, Goaltender Denis Lemieux is on Jim Carr's show demonstrating the different types of penalties. When he shows us what spearing is, that was actually butt-ending. Spearing is done when you use the other end of your stick; the blade end.
Slap Shot (1977)
1 factual error - chronological order
Directed by: George Roy Hill, George Roy Hil
Starring: Paul Newman, Lindsay Crouse, Strother Martin, Michael Ontkean, Jennifer Warren
Continuity mistake: A shot of the chiefs' bench shows Newman on the left and Ontkean on the right. Ontkean says "I can't believe my frigging eyes." Neither can I. The next 2 rapid camera cuts show Ontkean on Newman's left, then on Newman's right again.
McGrath: Every scout in the NHL is out there tonight, with contracts in their pockets, and they're looking for talent. For winners. oooooooooh. All my years of publicity. All the fashion shows and radiothons for nothing... They come here tonight... to scout the Chiefs... the toughest team in the Federal League! Not this! Buncha... pussies."
Trivia: 2 of the 3 Hanson brothers are related (Jeff and Steve Carlson). Originally, their brother Jack was supposed to be the 3rd Hanson, but at the time filming started, Jack was called up by the Edmonton Oilers of the World Hockey Association. Their teammate, Dave Killer Hanson replaced Jeff and Jerry Houser replaced Dave Hanson and became Dave Killer Carlson.