Just got to hear Will Wright give a reprise of "Dynamics for Designers", his talk from GDC 2003. Yes, my job has perks.
Will Wright is crazy smart. He's capable of thinking at a very high level of abstraction. Very theoretical, very research-oriented. He explained his toolkit of topologies, dynamics and something or other. You should read this amusing summary if you really want to know.
The funniest moment of his talk came when he showed a slide of his cat, apropo to nothing. "This is a picture of my cat." (next slide)