When I was younger, and he was younger and not quite so crazy, I was occasionally told I looked like Charlie Sheen. I never saw it at all.
Showing my age here, but in junior high I frequently heard both that I looked like David W. Harper, aka Jim-Bob Walton:
or like Eric Scott, aka Ben Walton:
My hair was never as red as Ben's, though. But yes, people thought I looked like a Walton -- what kid in junior high wouldn't be proud.