I have to give a big shout out to Catalystg for releasing a Playstation emulator for the BlackBerry PlayBook. The PCSX-ReARMed-PB lets you play (legal!) Playstation v1 games on your PlayBook. There are a few incompatibilities that users are running into but Catalystg has a great thread going on CrackBerry forums about the release. They actually used RIM’s TouchControlOverlay port to create the controls interface for the emulator.
Check out all the instructions here (not for the faint of heart) and you can download the emulator zipped from GitHub. Credit also goes to Notaz for providing the original emulator and assisting with the port and Jtokarchuk for his assistance. Kudos to UrbanGlowCam for the screenshot.