I saw these earlier today and almost had a heart attack.
The first one i saw was the duck one. the physics are some of the best i have seen... ever. they drop alot of ducks... and... HOLY CRAP THEY DROP ALOT MORE DUCKS!!
the MOST stunning i saw was the doc oc one... the renders of his facial features tend to make you wonder if thats just a movie of some guys face or not. as impressive as just him by himself is... they display a whole city with rendering that could give the cg animators of any major motion picture movie a run for their money. I really recomend that you are sitting down when you view this one.
sony has certainly outdone them selves with both the psp and the upcoming ps3.