Even though I don't play WoW anymore(as of 2 days ago) I'd have to say its pretty impressive with 9 million players a huge detailed world, and 9 million players who are willing to pay $40 a month to play the game
cod4 and bioshock definitely deserve to be there - everything else not so much (personally i think crysis has too much hype and nothing to back it up, halflife is overrated, and nothing else really has anything to challenge either cod4 or bioshock)
I chose COD4 only because WoW : BC shouldn't be compared to any other game honestly. It's better described as a part of your life... you got your girlfriend/boyfriend, you got your work, you got school etc etc.... then you have WOW. As far as COD goes, i think its one of the most realistic games i have ever played, the graphics were great although id like to be able to pickup a mini gun and tear trees down like they do in real life .
LMFAO. WoW was supposed to be a joke but people actually have picked it so, it's all cool. =P COD4 was good I just thought it lacked playing time. =\