When you see someone often in movies or TV, you start to notice things that make them different from other celebrities. Maybe it's a facial expression, or the way they dress, or something they do over and over. Most of the time, there's a perfectly reasonable explanation.
Why does Bill Nye wear a bow tie? How did Jason Momoa get that scar? Was that Marilyn Monroe's natural voice? You'll find out in the latest ranked pictofacts list at Cracked.