I played a little co-op Ratchet: Deadlocked, recently. It's hard to see with screens that small, so I figured I'd play some proper Ratchet & Clank. The first game is still good. Outstanding, really. The music rocks. The weapons are fun. The art is great. But the old fashioned controls, while very responsive, feel a little clunky. And the inability to access all of the weapons without diving into multiple menus limits the variety of fun. I barely touched the bomb glove, decoys, and half a dozen other weapons. And context sensitive gadget use was also a big improvement in the subsequent games.
It still felt better than the time I spent with the PS3 version at PAX. And that fact is still an unpleasant source of cognitive dissonance for me. Some day (not soon) I'll get a PS3 and play through that game.