It seems that someone finally found a way to make Dreamscene, the video wallpaper utility that is an Windows Vista Ultimate exclusive, available on all other versions of Windows Vista. This is reported by the tech blog My Digital life which is linking to a modified version of Dreamscene and describing on how to install and use this version on your operating system. You only need to download the modified version, unpack it to your system and run a bat file that handles the installation as an administrator.