10. Michael Bublé
Best Known For "Haven't Met You Yet", crooning, swing, etc
Appears In Piper Maru and Apocrypha 1996 Before melting the hearts of millions with his velvet vocals, Bublé was lucky enough to appear in not just one, but two episodes of The X-Files. When Mulder and Scully are sent to investigate a French salvage ship whose crew are all suffering from radiation burns, they not only stumble upon a possible UFO cover up, but also a young Bublé putting in a turn as a submarine officer. http://www.youtube.com/watch?v=wRyJ8oZL0Zg Unfortunately for the acting world, Bublés days as an X-Files extra were short lived, when he was kicked off the set for stealing a hot dog from catering.