Dragon*Con
From Super-wiki
Dragon*Con is the largest multi-media, popular culture convention focusing on science fiction and fantasy, gaming, comics, literature, art, music, and film in the US. There are are large number of fan panels organsied in different tracks of interest, cosplay, workshops, and guests from all areas of sci-fic and fantasy.
Dragon*Con 2010 will be held Labor Day weekend (September 3 - September 6, 2010) in Atlanta, GA.
The last couple of years a Sueprnatural panel has been held.