Just a note from my own xp:
I'm a gamer too. Personally, I have owned and used DDR, the original, for my PS2 a few years ago. I loved it! It really got me moving, my heart racing, and I loved the challenging my husband or brother/sister in laws to it! I actually got pretty good for awhile, although it's been so long, I'd probably be horrible now! If you happen to find DDR for the Wii, let me know how it is!
I own a stationary bike, which I typically ride to an episode or two of my fav sitcom, but I love to do different things, and I love video games too, so I say, great combination!