If you haven't heard of http://projecteuler.net/ , you may want to go give it a try now :)
It has a collection of various math-related problems which can/should be solved using some computational power. Part of the fun is finding the elegant algorithm to come up with the answer, or sometimes just solving a fun problem.
Tao Te Ching Discussions : Chapter 9 (includes links to previous chapters)
What is the nature of conflict?