For people who are complaining that the PlayBook will only run 1 Android application at once...I don't think you understand the system that is being put in place. Android applications run IN an application called Android Player - it is a virtual machine, an emulator if you will. Remember N64 emulators for your PC when you were in high school? (perhaps some are too old for that one) - it is the exact same idea. It would make sense that only one instance of an app would play at one time. RIM is already pulling off quite the feat to make this happen.