DLC
YOu get the feeling that games are made with DLC content in mind from the begining, meaning that when you shell out your £40, you are actually buying 70% of a game, if you want the whole thing, you must pay more, later. I prefered it when DLC was a new phenominom and it really seemed as if the game makers had had an after through, and so built you something cool to add on after they have created the game.
Case and point, the DLC for Bioshock on the Xbox360 was actaully already on the disk, and you had to pay money later to unlock the DLC data you had already got!