Irish-born actor Gavan O'Herlihy eked out his strongest presence in tough-guy roles, specializing in the action, western, and sci-fi genres. He formally debuted in a guest bit on The Mary Tyler Moore Show, then briefly landed the part of Chuck Cunningham, Richie Cunningham's (Ron Howard) older brother, in the first season of the popular period situation comedy Happy Days. Unfortunately (and for...
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