Introduction to Advanced Modeling
Fractals: (images by Ken Musgrave)
i.e. Mandelbrot set
Fractal Mountains
More on Fractals and other Techniqes
See "Chaos and Fractals: New Frontiers of Science" by Peitgen, Jurgens, Saupe.
Particle Systems:
Intro to L-systems, see the work by Prusinkiewicz & Hammel