Some upcoming conventions of interest:

Steel City Con in Pennsylvania
http://www.steelcitycon.com/

HorrorFind Weekend in Pennsylvania
http://www.horrorfindweekend.com/

Eerie Horror Filmfest in Pennsylvania
http://www.eeriehorrorfest.com/

Capclave in Maryland
http://www.capclave.org/capclave/capclave11/

Chiller Theatre Expo in New Jersey
http://www.chillertheatre.com/main.htm

KatsuCon in Maryland
http://www.katsucon.com/