With all the commotion and anticipation surrounding the new World of Warcraft expansion, The Burning Crusade, a few retail stores will be holding launch parties on the 15th and 16th. There are 4 major stores in California that will have developers of the game present to sign copies, starting at 6:00am on January 15th.
If you don't live in the California area, GameStop/EBgames and Best Buy stores across the country will be holding midnight release parties at 12:00am on January 16th. The GameStop/EBgames stores will be holding a few events, such as a costume contest, World of Warcraft card game tournaments, or screen-shot contests. Check with your local store to find out more on what events they will be hosting.
Links to lists of participating stores can be found on this page. The list should be current, but a quick call to the store to confirm that they will be having a release party would be a wise decision.