Actual Transparent Window offers new ways of working with multiple windows: it lets you easily set and vary transparency level of any window, either manually via title button or automatically depending on a window state (active/inactive/moved/etc.).
Wallpaper Slideshow Pro is a great utility for displaying your favorite photos as desktop wallpaper,with lots of different options it offers you complete control on your wallpapers collection. It supports exif/iptc/xmp and multiple monitors.
The sun disappearing in the waves of the sea is probably the most beautiful seascape scene. It makes this animated wallpaper the perfect enchantment for any computer. It supports Windows XP/Vista/7 as well as Aero and dreamscene.