Monte Carlo methods
See also the Monte Carlo chapters of
Information Theory, Inference, and Learning Algorithms.
Tilings
To view the random tilings of the hexagon, made by Propp and Wilson:
gv ~mackay/pub/images/mcexact/tshirtb.ps &
gv ~mackay/pub/images/mcexact/hex256.ps.gz
Tiling applets online
Spin systems
Simulations of Ising models