IMHO, fractals are very insteresting objects. I think, that understanding of fractals maybe a key to reveal something important about the structure of the Universe. Ok, fractals sometimes used in games for graphical improvements. Download games and see that fractals sometimes are used for rendering textures. Instead of keeping huge graphical files such as BMP, textures can be rendered in real time using fractal algorithms. As a result you can see synthetic mathematical picture of trees, flowers etc.