Digital Hollywood Conferences Digital Media is the future. And it's getting exciting b/c it's moving beyond ringtones to true rich media on multiple platforms. This org has different conferences during the year so check out their annual schedule.
E-gov Institute Numerous conferences throughout the year about technology and government.
FS/TEC Home Food and hospitality tech from the kitchen to the consumer.
Game Developers Conference This conference gets into the nitty gritty of game development. Has special tracks for Serious Games, Mobile Games, etc.