Been having loads of fun with my WII so far. I got my age back down to the low 40's. I have discovered that I have balance and flexibility issues with my right side. That's what I love about this thing. It critiques my form and helps with core training. I have tended to let strength training slide because my favorite exercise is aerobics, but this makes the core training fun.
The WII won't replace what I've been doing, but it will be a fun alternative to night-time eating.
I even got a workout in this morning and I usually don't on Friday mornings. I woke up rarin' to go.
Oh, and here's a tip. Sam's club and Walmart have the WII consoles for $249. Amazon.com has the WII fit for $107. I paid more than I should have for mine, but it's still worth every penny.