There were some rather impressive gameplay demos today at the Microsoft Conference; I'll list the best ones below that I think most people in here will be looking forward to:
Minecraft for Xbox 360 Kinect - This was only spoken about, no demos were shown this time.
Halo 4: Anniversary - This is a remake of Halo 1, which looks detailed, but from the little coverage that was shown it doesn't look that great, unfortunately.
Gears of War 3 - This was played on the Kinect (I think...) and looks alright. Not to my likings though.
Battlefield Bad Company 3 - The detail and graphics were absolutely great for this demo; I thought it was very realistic and emphasises on the true horror of war.
Forza Motorsport 4 - Looks very new and shiny, a lot more detail than FM3 and plays well.
Call Of Duty: Modern Warfare 3 - Very impressive gameplay by the looks of it; the graphics were of a high standard, as expected.
They've revealed a lot more action games for the Kinect now, so hopefully more people will be interested.