Famous people are just like you and me. They put on pants one leg at a time. Some of them love video games and enjoy mixing it up on Xbox Live. But the vast majority of them don't advertise their superstar online.
Though, some celebrities have such recognizable voices, that the moment they open their mouths, they show their hand.
Actor Jon Heder told Conan O'Brien in a recent interview that while playing Xbox Live, his identity was discovered during a match, and his fellow gamers began to "quiz" him.