Little Big Planet

Little big planet looks brilliant. You control a figure call sackboy. But this game would be very unimpressive if you could only play through the levels created by the publisher. The great thing about little big planet is that everything is customizable. Your sackboy can be changed and decorated made to like a cue version of any person ever.
Even more innovative is the level creation. First you choose a shape of any size you then choose a texture, then cut out shapes and place it in the level.
Resistance 2

The Chimera have who were defeated in Europe are invading the U.S.A there faster stronger and more vicious than ever. Nathan Hale the hero from the first game returns this time with a mysterious team of resistance fighters. Bosses this time will be 100's of feet high and you will have to take then down.
What even better this time is the multiplayer is even bigger with 60 players online. But teams will be split up in to squads.
Far Cry 2

Think of Far Cry 2 as GTA but as a first person shooter. Missions are started by walking into markers like GTA. But the brilliant thing is that everything can be destroyed. Fire a rocket into a side of a building and it's totalled. You start planning how to destroy bases in the most efficient way.
What is even better is that you can do missions or just run around wreaking havoc.