"Cool Code" by Kevlin Henney is quite fantastic I think. He lists some examples of amazing programs (like a chess program in less than 1K, and the Ruby quine with the rotating ascii-art globe). Maybe not so useful, but still great!
http://vimeo.com/28772428
Having the same issue (listing tech talks) and seeing that lots of tech slides were made with HTML and available on github we develop a search engine in a week-end to reference them. http://slidedeck.io/
Since it is not readme based, I suggest including Y-Not[1] - an excellent talk about functional programming and lambda calculus