My Fitness Coach for the Wii is on pre-order at Amazon for £14.99. RRP is £19.99. Play.com, GAME, GameStation and shopto.net have it for £17.99, so this seems like a good price.
As most Wii items, this will probably be hard to find stock of soon, so get it now :)
NOTE: This does NOT use the balance board.
* Personal virtual trainer demonstrates moves, gives advice, and provides motivation
* Access almost 500 exercises for flexibility, cardio fitness, strength training and more
* Personalized goals let you chose length and frequency of program on a calendar
* Customize your environment and pick your favorite type of workout music
* Chart your progress with graphs over an extended period of time