
I have seen the mathematics of fractals used in biology as a way of modeling very complex body surfaces (say, of lizards covered with clunky scales).

Notice that Sal mentioned a little of this late in the video where he was comparing the coasts of real land masses to fractal shapes. On another level, no one will hire you just because you know how to construct a Snowflake Fractal, or calculate its area or perimeter (well, maybe someone who needs to produce a design would), but there are many applications that might benefit from knowledge of Koch snowflakes. Because it is used in these fields, it must be used in computer programming, because to represent the shapes, you have to know the mathematics that would allow you to produce the shapes. It certainly could be used (and is used) in art installations, graphics and design, also fabric design.
