Finally managed to get hold of a Wii Fit yesterday, got home, tried it out for 40 minutes. My god, hadn't worked that hard in ages. Felt tired but good afterwards. Fantastic bit of kit. I guess the trick is to see how long it keeps you hooked to it. Definitely a few weeks at least, which for me is a long time. Here's hoping! Need to get that lil' Mii of mine slimmed down.