Wow...I'm surprised no one has mentioned AFO yet.
Anime Festival Orlando 7
http://www.animefestivalorlando.com/contests.php
Lots of fun stuff going on there. They have a list of contests and guests on their site. I'll definately be entering the AMV contest and maybe some other stuff^^. And of course they have cosplay.
I've been to AFO5 and 6 too. It's about the biggest event all year for me.
