Metro Home brings a little Windows Phone 7 style to your desktop
Metro Home is a portable, customizable desktop widget (remixed from HTC Home) which can display the date and time, local weather conditions, and a short range forecast. It's also got a small picture display window like the one you can utilize on the Windows Phone 7 homescreen. Right now, if you want to change the default path you'll need to do some manual hacking as described by the developer -- or you can drop some files into the Metro_Home\Widgets\WeatherClock\Pictures folder.
The .Net 4.0 framework is required, so make sure you've got it installed prior to launching Metro Home.
Download Metro Home for Windows