There is a new application in beta from Microsoft these days for all of us with Windows Mobile devices. The overview says it all:

Windows® SideShow™ for Windows Mobile® is an application for Windows Mobile 5 and Windows Mobile 6 Pocket PCs and Smartphones that allows you to use your Windows Mobile device as a Bluetooth SideShow-compatible device. This enables you to use your phone as an extra window into your PC. You can both access your computer’s information from your Pocket PC or Smartphone, and control the computer through a gadget interface. While the phone is out of range, or when your computer is off, you can continue to view content sent to the phone previously. This makes it easy to send information to the phone that you’ll need later on.

So check out the Windows SideShow for Windows Mobile Developer Preview