On May 22nd, I happened upon Blatte's Pages, a site that has compiled several galleries of fractal art and backgrounds from 2002 to 2012. I thought they were very cool and wanted to try making some of my own.
These were made on the WebPC with Ultra Fractal 2.05, and saved in PNG with a 1024x768 resolution. They aren't quite as nuts or polished as those, but I've had a lot of fun playing with the program.
Made in Ultra Fractal 3.05: