Good Gear Guide
In pictures: Free Android apps for BlackBerry Play...
How to Sideload Android Apps on the BlackBerry PlayBook
"Sideloading" Android apps on the PlayBook tablet, or installing "unofficial" Android apps without the use of BlackBerry App World, is simple. But you will need to download a few software tools, including a Java development utility and a PlayBook app installer, as well as repackaged apps in the form of .bar files. My friends over at CrackBerry.com have already described the process quite well so I won't reinvent the wheel. (Find instructions for Windows users here and Mac users here.) When you're done, keep moving for a list of the best currently available Android apps for the PlayBook.
In pictures: Free Android apps for BlackBerry PlayBook, 10 best downloads