[quote name='space_rover']Mario Cart? Who the hell wants plays Mario Cart?[/quote]
A lot of people. I am not one of them, but I'd have to be an idiot to say that Mario Kart isn't popular as hell. Chicks seem to like it as well, which gives it a crossover appeal that's somewhat lacking on XBox.
And don't get your hopes up. If GTA IV shows up for PS2 this year, I doubt it'll be out for XBox at the same time. Remember, that contract does say exclusive to PS2 through 2004. They did find a way to get the double pack out, but keep in mind those games are pretty old and not really a threat to the PS2's longevity at this point since everyone has bought it for their system already. I doubt Sony would be willing to let a brand new GTA game debut on both systems at the same time, unless Rockstar has some really slick loophole in that contract.
On the other hand, I do agree that this very well could be the best year for XBox games. If TFLO takes off it could help sales in Japan (although I certainly wouldn't count on that).