Is there any place on the web that lists up-coming Sci-Fi/Horror cons by location? It would be a great help.
Here's a pretty good starting spot....
http://www.creationent.com/ (http://www.creationent.com/)
There are other cons around as well. Starlog magazine lists them too. Maybe try some Googling.
I've found some of the smaller local cons are the funniest, but rarely get any press unless you know where to look. CinemaWasteland here in the Cleveland area is a good example, or Monster Bash in Pittsburgh.