TBDesktop is a small utility that runs in your system tray and periodically changes your desktop to a new picture.
You can select a folder containing pictures, choose a Frequency to change the picture, cycle pictures in order or randomly, Overlay a calendar on the desktop and much more.
Pictures can also be automatically scaled to fit your desktop, while keeping their correct Aspect ratio - unlike the default Windows desktop options.
This program gives Similar functionality to the WebShots dektop software, but correctly handles widescreen displays and unnusual laptop screen resolutions.
TBDesktop comes with a selection of sample images to liven up your desktop, but you can easily add your own.