If LocoRoco is anything like its PSP counterpart, that game will be one to check out for sure. On the Playstation store, as cheebdragon mentioned, there’s a great game called echo chrome that just kills me how simple but great it is. I’m looking forward to Wipeout HD as I’m a huge fan of the whole series. And yes, Little Big Planet is part of the reason I got a PS3 – I just hope it lives up to the hype.
I believe all these are exclusive titles.