My vote is for either Just Dance 2 or Walk It Out.
I use the Nonstop Shuffle option on JD2 and while you do have to wait between songs for the next song to load, it's only for about 15 seconds and you don't have to actually select song in between. I agree with AmyLou that there's too much stopping between songs on the original Just Dance, though.
I just got Walk It Out about 6 weeks ago, but I have to say I'm addicted. My 10 year old daughter just started on it the other day and she's constantly walking on it...the time flies and you get a good walk in before you know it! I also remove all of the slow songs and work up a good sweat. But overall, I think I get a better cardio workout with JD2.
I've never used Zumba or the Gold's Gym games, but I'm sure those are great too. Decisions, decisions...
| Pounds lost: 6.0