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Zach Galifianakis: Comedian, actor, beard enthusiast

Zach Galifianakis, the bearded comic turned reluctant big-time star, opened up to Brian Williams about more than just “The Hangover” trilogy that has made his extended Greek moniker a household name. They talked about life on his North Carolina farm, his family, weed, and of course his hit online talk show, “Between Two Ferns.”