My favorite one is that the game is not "original." I really don't see how that is a problem. If the game is a solid title in its particular genre, then I don't see why originiality is a problem. I like how people dismiss games like Halo: Combat Evolved, the Call of Duty series, Killzone 2, and Gears of War 1 and 2 because they are FPSs and therefore are unoriginal. I really hate that