Tournaments will be held in Los Angeles, San Francisco and Boston, with the winners of each city going to finals in New York. San Francisco's chance at playing will be on February 23 at 1015 Folsom, starting at 2 PM. The first 256 people at the door will get a chance to play, along with $10 Best Buy cards. While that's a lot of people to battle, the prizes are very sweet. According to Nintendo:

The grand prize winner will receive a crystal-coated Wii with a design from Super Smash Bros. Brawl, a home theater system from Best Buy and a copy of the game. The second-place finisher will receive one Wii system and Wii Remote, one copy of Super Smash Bros. Brawl and a $1,000 Best Buy gift card. The third-place finisher will receive a Wii and Wii Remote, a copy of the game and a $500 Best Buy gift card. The fourth-place finisher will receive a Wii, an extra Wii Remote, a copy of the game and a $250 Best Buy gift card.
Awesome. We'll see you there.