HN user
I took 15-213 at CMU. The moment I saw that code block I knew that's where you came from. One of the best clases I've taken there.
Good old csapp.c http://www.ece.cmu.edu/~ece845/sp02/csapp.c
Though this isn't a particularly interesting blog entry, Coding the Wheel otherwise has some of the best programming posts I've read on the web. The rest of the content is worth checking out. (Especially for the Poker Bot tutorial series.)
Can someone give me a sense of some projects you can do with a Teensy? I've never played around with programming chips like this before but sounds pretty cool from the comments.