It came in the mail today and I played around a little with the "?" AR card and Face Raiders.
Both were really neat, I loved how the AR card took the surface I was using it on and manipulated it and I could rotate it and get all sorts of different angles. Can't wait to try the other cards. The Face Raiders game was also neat but creepy.
Don't have any games to give any impressions on but so far I played for half-an-hour and the only headache I got was the one I woke up with. Also the system has a nice weight to it.