Then: Tommy Chong – a.k.a. Leo
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What show about the ’70s would be complete without the one and only Tommy Chong? While technically the character he played on That ’70s Show went by the name Leo, his mannerisms, mentality, and overall look was an indirect carry over from the “Chong” character he’s so well known for, just slightly older. The aging hippy was one of the few older characters that were allowed to join the “circle,” for obvious reasons.