Google has released its Google TV remote app for iOS, on the App Store. The remote only works with Google TV-enabled devices, such as the Sony Internet TV), and uses your iPhone, iPod touch, or iPad as a remote control.
Apple say “Turn your Apple iOS device into a fully functional Google TV remote! Use the mouse pad, arrow keys, and the full range of buttons. Allows you to turn the TV and AVR on/off so you can use this as the primary remote. Even search using your voice!”
Download: http://itunes.apple.com/us/app/google-tv-remote/id422137859?mt=8&ign-mpt=uo%3D4