Sarcasticgamer check out "Are you smarter than a 5th grader?" and "Valkyria Chronicles."
From the article: "In between wandering through the Capital Wasteland and living my normal life, I had a chance to check out a couple of demos. I'll spare you the Mirror's Edge love and get on with some of the more surprising demos that I've played this week. They're not the demo's you're probably thinking of.
One PSN exclusive and one XBLA exclusive, after the jump."