Use your Android phone as a wireless keyboard and mouse.
Remote Control Your Computer With Your Phone.
RemoteDroid turns your phone into a wireless keyboard and mouse with touchpad, using your own wireless network. It's a free application for phones running Google's Android operating system, such as the Droid (Verizon Wireless) and the G1 (T-Mobile).
RemoteDroid consists of two parts: the phone application you can download from Google's Android Marketplace, and a companion server application for your computer. More Info »
Key features include:
Touch-screen mouse control
Two onscreen mouse buttons, with right-click/control-click functionality
Use in either portrait or landscape mode
Works with any WiFi network -- no Bluetooth hardware or adapters required
Compatible with Mac, Windows and Linux operating systems