Justin Timberlake took the stage at the Consumer Electronics Show in Vegas today, perhaps an unlikely forum for the pop star. But it was Justin's appearance that made us do a double take. JT, who moonlights as a MySpace investor, was sporting a low-tech accessory: a full beard. From Justin's *NSYNC days to his acting gigs, we're used to seeing him with nothing more than the occasional scruff. And he's not the only typically clean-shaven celeb to hide his recognizable face under some facial hair. Here are 10 hot men who have done the same.