I know I'm late to the party but I've recently been studying cellular automata which led me eventually to digital physics and digital philosophy.

The implications of cellular automata are mind-blowing, IMO. Digital physics and digital philosophy are pretty out there but I found both of them very thought provoking.

http://en.wikipedia.org/wiki/Cellular_automaton

http://en.wikipedia.org/wiki/Digital_physics

http://en.wikipedia.org/wiki/Digital_philosophy