GIANT HOTEL: Last year the hugely huge al fresco fest Giant Maximus, that celeb-DJ, dance-y groove-it sound spectacular, welcomed Moby and Paul Oakenfold. Now the mega-party is moving all those thousands upon thousands of revelers indoors, to the Westin Bonaventure. The strobe-y beats will fill up two ballrooms and the poolside terrace. On the bill: Above & Beyond, Miguel Migs, many more party masters. Everything starts at 8PM, and winds up at 4AM.
TOGETHER AS ONE: Not too faraway from the downtown party (but not walkable, take note), Together as One features more fantastic DJ action, including John Digweed, Kaskade, David Guetta, and Sander Kleinenberg. Like Giant Hotel, Together as One keeps it moving right up to 4AM, so midnight will only be about the halfway point. You slept in today, right? Good. It's dancing dancing dancing at Los Angeles Sports Arena, starting at 6PM.
TWENTYTEN: Actually, the full name of this extravaganza is twentyten: A Space Odyssey. Shiny Toy Guns will perform. The setting is a massive, 18,000-square-food stage at LA Center Studios. If you've never been to a studio-based New Year's Eve party, you should seriously consider changing that, seeing as how you live in Los Angeles and all. Open bar to boot. Everything's on from 9PM-2AM.