Well, I'll buy it when it warrants buying. Right now, I'm looking at Tekken 6, Heavenly Sword, the eventual God of War 3 and maybe Resistance: Fall of Man. Not enough to get me to buy a $400 system just yet.
The 360 is doing a whole lot better in terms of getting me to buy. It just seems better on the whole. Can't wait till the competition between the 2 real systems get under way in a couple of years.
As cool as the Wii is, it's more of a peripheral. Too many boring casual, kiddy and/or slapped-together-at-the-last-minute games for my taste. There are like 3 games out now that I'd play at all other than Nintendo's own releases, and Brawl is still a month away. The distant future's not looking too bright (IMO) either. Typical Nintendo.

At least I didn't spend any cash on it this time (my brothers took the bait, I reap the benefits for free).