I had one I used for a while that I used to love, one of the early Queens of the Stone Age album covers. But it's basically a sperm pushing it's way into a circle, which seems to be frowned upon by most forums on the interwebs.
My Avatar? Oh, I couldn't rightfully claim ownership of that terrific film. If I'm not mistaken, Mr. James Cameron is the rightful owner of Avatar and all of its intellectual property.