I'm glad this is coming over to PSP since I don't have a DS. Im with you, stof. I think this could lead to more top down GTAs, which is good for the franchise IMO. The 3D formula started to feel stale in GTA4. Not having ever played Chinatown Wars, I'm hoping what's old feels new again.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 
and Wii 
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.
