Set GIFs as wallpapers. As requested by /u/EddyG :).
If you're brave enough, you can add GIFPaperAgent to your login items.
GIFPaper is developed by Tomasz Wójcik.
First and foremost GIFPaper is alpha quality software. It comes with no warranty and I (the author) take no responsibility for any problems/damage/anything else that may happen while using it. I've done my best to keep the app safe and I don't think there's even a smallest chance of it damaging your computer in any way but still, be advised of the above statement.
As for the license - all rights reserved for now. I'll probably open it on GitHub when I get a chance to clean up the code.