9 Times Method Actors Actually Forgot Who They Really Were

3. Paul Newman Never Stopped Swearing After Playing His Curse-Heavy Slap Shot Character

He's not one of the best-known proponents of method acting, but Paul Newman trained under Lee Strasberg just as Dustin Hoffman and Pacino would go on to do after him. He was early in his career even likened to Brando, though not always favourably ("I admire Mr. Brando, but I don't want more than one of him", wrote the Daily Mail back in 1956, moronically).

By 1977 - the year Slap Shot was released - the critical consensus had changed on Newman, and the actor was still method-ing it up to play Reggie Dunlop, the player-coach of a bumbling ice hockey team. One catch, though, was that Newman, who cursed little in real life, was required to deliver foul-mouthed dialogue by the shedload as Dunlop.

Newman claimed Dunlop so took over that he couldn't stop swearing even after shooting on George Roy Hill's comedy ended. According to Newman himself, he knew he "had a problem" when he turned to his daughter - a child - one day and asked, "Would you please pass the f***ing salt?"