Presently I enjoy the Kinect and Wii and if you don't have one or both of these game systems you are missing out on some serious fun. For example on Wii which is an older system there are games like Just Dance 1,2, and 3. These games are not only fun and entertaining but a great workout. If you're not sweating you're not doing it right! Other fun games for wii are Dance for broadway and zumba. Games i highly recommend. There are also serious exercise games from Pilates to boot camps. That is not even including all the fun activities you can do with a wii fit, like yoga, and step aerobics.
For the kinect there is a few more interactive options. I'm going to warn you first. If you play kinect it is more than likely a better work out than wii. Some fun kinect games include Dance central 1, 2. Just dance 3, zumba, and michael jackson experience i highly recommend for xbox not wii. There is so many exercise games solely for the kinect that everyone will find something they love.
I kid you not i have burned more calories playing games than i actually have exercising. Just to make a point. So i hope instead of packing on the winter weight you exercise inside with a video game console.
I know this is random but