CWiid

Since the Wii Remote uses bluetooth to communicate with the console, it's relatively straightforward to use it to control a computer. The most obvious way is similar to the main menu on the Wii console - point the remote where you want the cursor to go, and press A and B to left and right click. There are also options for tilting the Wiimote to move the cursor around, which is useful if you don't have a sensor bar available.