I think its not a Ghost pepper from its appearance but maybe I'm wrong. Kind of looks like a Pimento or a cherry bomb or something. Stem looks too thick and its too round and smooth to be a bhut. If it is a bhut or a variant, then I should probably appologize to the guy for doubting.
http://www.youtube.com/watch?v=EISIPy3HJCA
http://www.youtube.com/watch?v=EISIPy3HJCA