Someone a few pages ago didn't really understand what I was talking about, so let me clarify a bit.
By Bioshock2 and MW2 being useless, they qualify because they both are included on a game disc, in a game box, and you play them (or will soon, in Bioshock 2's case). I am referring to ALL the content on said disc. Yes, I consider a multiplayer Bioshock version to be useless. It will not add to the narrative significantly (it can't) and it also won't add to the gameplay either. MW2 is useless in that it's just a worse version of COD4 with better graphics.
Really, if I'm getting complaints because I say a graphical upgrade doesn't make up for significant drops in every other area and then calling it useless, well then...I guess I better go enjoy some games that actually deserve a place through superior game design and innovation, as usual.
Anyway, what else is useless? Achievements in the star wars game that can't be achieved because you brought the game now and you need to wait a few months before the new release of it comes out with the levels that count towards said achievements.