This generation's workouts

We went to our friends, the Watson's house, tonight for some dinner, games and visiting. It was so nice to have some time with them, we have really missed seeing them regularly. They got an XBox Kinect for Christmas, and we played it right before leaving - we should have started the evening with this - what a riot!
So have any of you seen this? It really was a lot of fun, and I kind of got winded toward the end of the second dance! Kelly and the boys tried out the rafting game, and he said the same thing. So it leads me to this question for you: do you think it is legitimate to use your game console to log PE credits if you homeschool?
I thought it was kind of silly at first when I heard of people doing this a couple of years ago. I thought it was a cop out, and no one would really accept that as exercise. But then I got a Wii Fit board for Christmas last year. I think it is a great piece of exercise equipment. I haven't been faithful to it for months now, but I am planning on getting back into it soon.
There are some games that you don't really have to try hard on, but there are others that will give you a pretty challenging workout. I know I've seen my boys pretty redfaced after boxing each other, and I tell you, less bloody than the old fashioned way! ;)
Now with the Kinect, there's no telling how interactive you can get with these games in the future. I know when I was growing up, I loved watching my mom work out with Richard Simmons. Now I think about my kids watching me work out with my yoga avatar. With what will my grandkids be watching their mom work out?
Now don't get me wrong. I am a big outdoor person. I want to walk on the trail and ride bikes with my kids. I love to swim and play on the jungle gym with them, too. But in the winter months when we can't get out and do those things, I think it's an acceptable alternative. I don't have the money to take them to the indoor pool, or the skating rink, or the ice rink every week. And I don't have the desire to bundle up in 20 degree weather to run on my own, let alone with 4 complaining children. So will I be logging cyber-exercise hours this year? I say, hand me that nunchuk and let's do some yoga! ;)