BlackBerry PlayBook demonstrated running Android apps
The magic was made possible thanks to Android Player, the software tool that is expected to land on the BlackBerry App World later this summer. In essence, it will emulate the Android 2.3 operating system to a certain level – just enough to enable Android Apps to run natively. However, it seems logical to see its future versions supporting Honeycomb applications as well. After the Android Player's official release, selected Android apps should be available for download through the BlackBerry App World, which means that we may see RIM's software marketplace expand quite a bit.
source: Engadget via BlackBerryOS