By David Askirk on Oct 22, 2008
I have discovered Core Wars (http://www.corewars.org/index.html) It is a great game where you need to write your own warrior to fight for cores in a VM.
I have started a project of write my own Mars because the one in java is written in old-java and because I wanted to try to make a simple VM.
I will post more about this when I got more to post about :-)
Another thing that I have found on the interwebs is http://projecteuler.net/index.php a great page with small problems which is fun to try to solve in breaks, and for getting your head of things.