Wow! We've all met guys who are undoubtedly cute, but then one day -- Pow! -- it's like they've been reborn as the pinnacle of studliness. Or perhaps we've forgotten all about them, and when stumbling upon them again -- Yowza! -- we wonder how their sultry image ever flew out of our mind. From rockstars to Reality TV daredevils, here's the men whose shirtless bodies are always welcome reminders of their unexpected beauty.