The Wii is just cool - I have a lot of friends asking me if I can get them a discount on it and I have to explain to them that it's not a Microsoft product. But it clearly appeals to a whole new group of people - these are generally folks that have never talked to me about getting Microsoft products.
While I have almost no interest in getting a PS3, I really do think I might enjoy a Wii. And I'm not alone. [update: fixed link]