PdaNet lets you tether your computer to your phone's Internet connection using your USB cable, and it's really simple to set up.
Trying to find a WiFi hotspot to connect your laptop or netbook can be quite a mission at times. With PdaNet though, you can ensure you can always get your computer connected - using your Android phone. You just need to download and install the desktop client on your PC then follow the on-screen instructions. Note that you may have to download driver software if PdaNet doesn't recognize your device.