Today I came across Gurmeet Singh Mankus blog, which contains a really good set of mathematical / computational puzzles and solutions:
Also, he has an interesting selection of computer science related posts here, as well as some other interesting stuff, so I encourage you to explore his blog.
All looks good – like the music & document links! Will follow with interest…
Comment by JR — August 24, 2009 @ 1:18 pm