FAME: Fractal Art Museum Enterprise
Besides a large collection of fractal art on display, this site also has an excellent tutorial for those using the Ultra Fractal software!

Fractals from Yuan Yufeng
A nice website filled with many fractal galleries for anyone who loves to view fractal art!

Les St Clair's Fractal Panorama!
An excellent site with a number of galleries showcasing breathtaking fractals!

Linda's Fractals
Visit Linda's site and you will find a variety of beautiful fractals, including ones she has combined with photos of cats.  A must see, especially for cat lovers!

Mind-Boggling Fractals
Paul Carlson's Mind-Boggling Fractals includes a gallery of animated fractals.  An amazing site!