NBC Sports broadcaster Bob Costas, the play-by-play man for the Eastern League's Syracuse Chiefs in 1973-74, also weighs in on the film.
"I am here to tell you that while 'Slap Shot' may have exaggerated a little for dramatic effect, it is essentially true," he says early in the documentary.
These true-life tales are bolstered by the reactions of NHL players from yesterday and today.
Minnesota Wild coach Bruce Boudreau, who had a small part in "Slap Shot," and retired stars Mike Bossy, Mike Gartner, Al MacInnis, Adam Oates, Billy Smith and Bryan Trottier share memories and anecdotes, as do current NHL players.
In the end, the documentary delivers on its promise to show why, as the announcer dramatically intones, "'Slap Shot' is more than just a time capsule of minor league hockey in the '70s and how its irreverent script, colorful characters and distinctly unsentimental story set itself apart from films of its genre."