Heavy Gains
Vincent D’Onofrio, who plays the now-legendary character Gomer Pyle, set an odd record in Hollywood. He gained 70 pounds to look the part, and it’s the most weight that any actor has ever gained on top of their real weight to play a character in a movie.
He also kept his head shaved for the duration of filming, which apparently ruined D’Onofrio’s social life at the time, as people thought he literally looked stupid.