I love Call of Duty 4: Modern Warefare. It started a revolution within the FPS community. It made leveling worth something and actually had me playing the game fo much longer than any other Call of Duty game, including World at War. It has amazing maps, great graphics, and the weapons are balanced very well unlike WaW where you can run around with an MP40 and juggernaut and destroy any other player. All i have to say is that i can't wait for Modern Warefare 2.