Sequel to one of the best fps ever, ultra realistic with a real go anywhere feel to it. I can see why the sequel will be any worse! Its only available for preorder as its not out until July but shopto.net are £3 cheaper than anywhere else i can find! Coupled with shopto's history of getting games to me a couple of days before release date and with their "release date or compensate" (hope your reading amazon) its got to be a winner!
Oh and you can essentially knock a pound off if you order by text :)