The Origins game conference is June 29th - July 2, 2006, in Columbus, Ohio. There's almost nothing in the way of electronic games, but there are many sessions and seminars on other types of games.
I pulled down the spreadsheet schedule and it had something like 3600 events on it. There's a huge vendor area as well.
It's a bargain - only $50 for pre-registration, $60 at the door. I think some events have extra charges but it adds up to a reasonable cost. (Plus what you spend on food, lodging, and games:)