I will almost definitely get the next Nintendo system so I voted for that one. PS3 and Xbox 2 are both wait-and-see things for me. I doubt I will get both, but will probably get one of them eventually. So I just voted Gamecube 2 rather than All of the above.
I think in every generation that Nintendo has participated in they have had far and away the best controller. Xbox controllers suck, but I actually love the MadCatz Microcon controllers for Xbox. Hopefully Sony will FINALLY swap the analog and D-pad positions for PS3 considering it is the far more commonly used of the two controllers and should be in the more comfortable position. The placement of the analog stick on the PSP does not signal that they have learned this yet.
It's weird that Nintendo is a given for me, considering that I play my Xbox far more than my Gamecube and in spite of not owning a PS2 I wouldn't hesitate to acknowlege its superior library overall. I guess I'm just a sucker for Nintendo's in-house game development (and a couple of their 2nd party developers). And if the current mod-scene didn't exist for the Xbox I really doubt I would even own one, let alone play it more than my Gamecube.
...and so on.