Charismatic ex-football star Alex Karras made a nice transition to acting, playing roles that emphasized not only his physical size (ironically, he was undersized at his position), but also the size of his heart. His appearance as himself in "Paper Lion" (1968), based on the George Plimpton book, hinted at his potential, but he really burst into moviegoers' awareness as Mongo, the idiot henchman…
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