For those interested that live around the area, just a heads up that next weekend from May 20-22 in Virginia is the Fusion Game Convention. It's pretty much suppose to be a 24 hour game room with several tournaments all weekend long. www.fusiongc.com
Early next year is MAGfest, formally the "Mid-Atlantic Gaming Festival", now stands for "Music and Games", as one of the main features are the live performances by bands such as The Minibosses. MAGfest is from Jan 13 - 15 in Virginia. www.magfest.org
For those of you on the West coast, the massively popular Penny Arcade comic holds their own game convention in California, August 26-28. www.pennyarcadeexpo.com
Aside from those strictly "game" conventions, most anime conventions will have a reasonable game room.