I'm going to start a routine in the next week or so. I gained weight over the last 6 months (insane stress/lack of sleep=not enough exercise/eating badly) and want to get it off before I move in August.
I'm not a DDR guy (I suck at rhythm games) but I should be getting the new EA Sports Fit in the next few days for my Wii. So, we'll give it a try. My knees are shot from my younger days and I've a rather permanent case of planar fasciitis so my options are somewhat limited to low impact when it comes to these things.
Good luck on your plan!