Metal Gear Solid 4. Lots of people hated it (cutscenes are really excessive), but I really enjoyed it. I am a Metal Gear nut, but still. I liked the balance between combat and stealth, you usually have a choice of how to approach situations, unlike in previous games. Lots of people seemed to take this as 'OMG! I CAN JUST SHOOT EVERYONE! THIS ISN'T PROPER MGS!!'.