Here is a cool yet simple discovery. Just download Aquatopia (http://www.gamespot.com/ps3/action/aquavita/index.html) which is a $2.99 EyeToy game on the PlayStation Store!

It allows you to play it on remote play, so through remote play just start the game and check out camera setting... and you get to see your house anywhere in the world through your PSP.

That's it!