psx4iPhone - was just released for purblic. It has been in private beta for a little while now, but now its first public release, at Version 0.1.0.
It’s already available on Installer.app, Check out the developer’s site for lots more info, and their forums, you can find lot of information on which games work / don’t work / work best etc etc . just visit:
http://zodttd.com/wp/