Easily.... Wii60. PS3 has nothing to offer over 360, except Blu-ray which the HD-DVD makes up for easy. Besides, I don't plan on using consoles for playing back HD content. Sadly, I still do not own a 360, but picked up a Wii a couple weeks after it's release. I'll never regret it.
I love the Wii. I hear people saying the novelty will wear off... sure, maybe if there's 1 game for it, but there's a huge lineup of games planned for release in 2007, and I doubt they'll get old anytime soon.
And BTW, this "kiddie" system has my father and father-in-law both playing it, and they've never picked up a console before. Awesome.
As for it playing back DVDs, I think they still have that planned. There's quite a bit of flexibility and expandability built into this thing, so I don't doubt they'll have something before 2007 ends.
It doesn't have the same hardware and graphics level as the 360 or PS3, but does it need it? It's innovative controls in combination with fun games more than make up for it... hell, I still enjoy playing some of the old NES games. Graphics aren't as important to me as the gaming experience itself, and as far as that goes, Wii wins.
I choose the 360 over the PS3 because the 360 easily has more to offer. The Live! service can NOT be beat... Sony tried, but failed miserably. Sony... lost it's focus trying to compete with 360. Too much hardware for just a fricken gaming system. The result? Crappy expensive paperweight. People say "Wii is just Gamecube 2"... I don't get that. Have these Sony fanboys taken a look at the history of playstation? Besides some slight improvements in graphics each time, NOTHING really changed. The Wii was a huge step in gaming evolution... there are more factors than graphics (which it did improve on over Gamecube, although not heavily).
Hooray Wii60!
