Journey
Based on a couple screen shots I've had this game on my list for quite some time. Keeping an eye out for a release date and more details on the gameplay etc. It finally came out a few weeks ago and I eventually caved in and bought it.... Then last night I played it. What a fantastic game!
It's really short, has little action or real difficulty but similar to Ico there is art and an experience here! The game only took maybe 2 hours to go through, but I will go through again, absolutely.
I will say that this is definitely an acquired taste, it's also likely dangerous to go in with expectations too high.... I guess I'm not helping that at all.....
Any way, go play this game, well worth it, just make sure you play it at night, in the dark, with the sound turned up and fully play through the whole thing in one sitting.