Games Master UK
Arkham Asylum is a game with the power to utterly captivate you and can stand proudly alongside modern classics such as "Resident Evil 4", "Gears of War," and "BioShock"...simply put, Batman: Arkham Asylum is a masterpiece. [Sept 2009, p.66]
They gave it a 96/100. My hype level for this game has shot through the roof.
http://www.metacritic.com/games/platforms/xbox360/batmanarkhamasylum