Call him a "dumbass," call him a bimbo (or is it mimbo?), call him what you will... but don't you dare deny the fact that Michael Kelso is quite possibly the best part of "That '70s Show." Ashton Kutcher's lovable lunkheaded teen has some of the best lines of series, rocks those feathered locks like a dream, and knows an epic burn when he hears one. He may not come off as the brightest bulb, but do you really need brains if you're that adorable? Here are 23 times Kelso was the funniest "pretty-boy moron" we've ever laid eyes on.