If you haven't heard by now, WikiLeaks released a ton of CIA exploits and information about the CIA's massive hacking operation. It's going to be fun to see all the software patches that come out in the coming weeks. Notepad++ already got one patch in.
An impressive tool built by Detour for creating tour guides.
I've always been curious about how computers generate random numbers, and this article gives a great introduction.
A mathematician explores the extremes of mathematical notion for expression really large numbers. It's a bit long, but starts to get really interesting about half way through when he starts talking about Turing machines and busy beaver numbers.
A fascinating chemist responsible for developing hundreds of psychedelic drugs with a "schedule 1 license" from the DEA for pharmacology research.
A clever library for building finite-automata using functional combinators.
Crazy implementation of a digital clock in Conway's Game of Life. Run it yourself here. If you don't know Conway's Game of Life, you can learn more about it here.
Interactive animations for learning probability theory concepts.