Yeah, it's a little hard to gauge the anticipation levels between the two games. I've honestly seen more hype over Mass Effect, but that's to be expected since it's a MSoft published game and has the money to show it off. I imagine that with Bioshock's official release next week (though some people might be able to get it right now) the 360 hype will shift even more in Mass Effect's favour.

Among the Game Geeks, particularly folks who've played System Shock (not me), they likely care more about Bioshock.

Finally finished the download after 2 days of online-offline-hopping-every-two-minutes. Gonna play the demo when I get home...while nursing my Katamari demo.