Wii Exercises/The Biggest Loser/Just Dance/etc.

We have a Wii. We got it mostly for the children, but once I found out that there were things made for "adults" for fitness, I got interested. I had my eye on one...I cannot remember now what it was...but hubby couldn't find it on his Christmas shopping on Christmas Eve expedition, so he got "The Biggest Loser" Wii game for me instead. I truly like it. I like Bob. I like the tips that it gives. I like that it adjusts to your needs. I like that it works out all parts of your body... But as far as fun, it's more like a chore. I do enjoy getting it done, but it's not FUN. I don't care that much cause I know that it is something I HAVE to do. Well, lately, I have read some stuff about Just Dance (and 2) for Wii...and have wondered how I would like them (I have wondered the same thing about Zumba). I LOVE music and I love moving to the MUSIC. I listen to music when I walk, when I clean, and lots of times, I feel like just dancing instead of doing what I have gotta get done! So, today, I looked up some YouTube videos for Just Dance. I did 4 different dances! It was soooooo much fun! I loved it! I had a really rough night last night with a sick child and all, and was really not up to doing ANYTHING today... So, I decided to give this a try and see if it pepped me up. Man, did it ever! Awesome! After one song, it said, "Sweat" and had this little bar graph thing that went up to 500+...does that mean 500 calories burned in that ONE song...or that the player had burned in all his/her play? Surely it's not for one song. Anyway, any of you who do this, do you use it as your "main" exercise, or do you do something else as well? Also, what other things do you use with your Wii for fitness purposes and how do you like them?