"It was probably the worst mistake I ever made, but at the same time, it's something I'll never forget," Boudreau said.
Nancy Dowd, whose brother, Ned Dowd, had once played for Johnstown, wrote the screenplay. It was Boudreau's understanding she had gathered all the memorable anecdotal material for the movie on one two-week trip with the team.
Boudreau's apartment was even featured in the movie.
"The director came in and said, 'We need an apartment for Paul Newman right now, a real rundown place. Who has the worst apartment on the team?' And everybody pointed to me.
"That was my sloppy period. I think they used my bed and if nothing else, I got a better bed out of it."
Boudreau's strongest memory of that time was a brief interaction with Newman, the legendary film star, who played the lead role of player/coach Reggie Dunlop.
"It's one of those things [that] when you meet somebody like that, you remember it the rest of your life," he said. "One day, [Newman] asked me how to take a slap shot. Like an idiot, I was so technical. He said, 'OK, kid, that's enough, that's enough,' -- and he walked away.
"The other thing I remember: Dave Hanson [who played one of the Hanson Brothers] asked me, 'Do you want to go see the dailies?' I didn't even know what he was talking about. It was what was filmed that day.
"So there was me and Dave and Paul Newman and George Roy Hill, the only four guys watching it, which I thought was so cool. Paul Newman turned around and said, 'I just finished making a movie called "Judge Roy Bean." I did that for the money.' He said, 'This movie, I think, is going to be a real hit.'
"I remember that to this day because he said it right to me. It's just something that stays with you. He was probably the No. 1 actor in Hollywood at the time."