By Rebecca Silverstein

Can you believe this "Karate Kid" star turned 50 on Nov. 4, 2011? He doesn't look a day over 30! But Ralph's not the only celeb who seems to have found the fountain of youth. Sure, styles change, but these stars look the same as they did a decade (or more) ago. Keep clicking for more ageless wonders!

BING: See more pictures of Ralph through the years