Sony's rather unique tablets – the dual-screen Tablet P and drop-shaped Tablet S – haven't quite taken off, but since they're based on Android, you can do with them pretty much whatever you want.
That is, if you've got root access. Luckily, the Tablet P was just recently rooted, and the method is pretty easy.
The whole process only consists of three steps: installing ADB on your computer to get it to recognize the tablet, changing two options in the Android settings, and finally double-clicking on a .bat file to follow the on-screen instructions.
Of course, all the usual caveats apply – warranty will be voided, and there's always the risk of bricking the device while doing stuff like this, at least theoretically.
If you're cool with that, though, go ahead and find the guide over at the Pocketables forums.