Want to impress your friends and bore the crap out of your wife? I have got the app for you! Jaadu VNC allows you to remote control your home or office computer from your iPhone.

Warning: you need to have a little geek in you to a) want to do this b) understand the technology to get Jaadu VNC to work. If you feel like your home router is not that scary, this is easy.
» Read more: Jaadu VNC for iPhone. Remote Control Computer from Your iPhone.