Game Developers Conference (GDC). This event will be taking place from March 7-9, 2012 in San Francisco, California.
The GDC attracts over 19,000 attendees, and is the primary forum where programmers, artists, producers, game designers, audio professionals, business decision-makers and others involved in the development of interactive games gather to exchange ideas and shape the future of the industry. So if you are game developer you should be there!
For more information about the Game Developers Conference, please visit their website – http://www.gdconf.com/