Dude, we've got one with WiiFit. That stupid little board will absolutely kick your a$$. It is wothwhile just for the WiiFit. Definately get the balance board as soon as you find it. The little sucker keeps track of weight, BMI and records of all exercises ever done by up to 8 users.
JUST MAKE ABSOLUTELY SURE THAT NOONE GETS VIDEO OF YOU USING IT OR YOU WILL END UP LIKE THE STAR WARS DORK ON YOUTUBE.
paUL