When someone is so accomplished in a field like dancing the way that Julianne Hough is, it's hard to believe that they could have time to follow any other pursuit. Or maybe I'm just really lazy? Who knows, but while many may be familiar with Julianne's work on 'Dancing with the Stars,' you may be surprised to know she was in the first 'Harry Potter' film. She's only in a brief shot, but she is within arms reach of Harry Potter, so that's a solid shot to be in.
Robert Pattinson had a bigger part in 'Harry Potter' than Hough, but it's one that people tend to forget considering Pattinson starred in his own massively successful series shortly afterward. He played Cedric Diggory in the fourth movie, but died at the end. It's like the Blackstreet lyrics: I like the way you work it, no Diggory.