Gearheads of War

Does anyone have the Wii fit?  i bought it and i have to say that im very impressed.  Now keep this in mind that i am a 25 year old male who is 6'2 220 lbs, played college basketball and i still work out 5 days a week.  but after about an hour on the Balance board i woke up the next day and my core muscles were soooo sore.  the balance games are very fun and addicting and the yoga and strength training games are pretty hard if you do them the right way.  Say what you want but im sold on the Wii Fit!  Also its simple enough for my 4 year old nephew to use.  I think Nintendo has put out a winner with this.  What do yall think?