MadWorld looks like a nice departure from the current Wii lineup, but while visually cool, I'm wondering if that thing will get old after an hour. Every video I've seen so far has the naughty guys just standing there waiting to be skewered to their friends and thrown in to a fan. I'm hoping that they've just turned off the AI for easier demo deaths.
Other than that, my wife has fallen in love with Rabbids and beating the shit out of me in boxing, so the Wii isn't going anywhere...
ETA: Oh, and World of Goo is still a fair amount of fun.