James Iry at One Div Zero has compiled a list of the history of programming languages. It’s a good read on a booring afternoon. Here’s my favorite part:
1995 – At a neighborhood Italian restaurant Rasmus Lerdorf realizes that his plate of spaghetti is an excellent model for understanding the World Wide Web and that web applications should mimic their medium. On the back of his napkin he designs Programmable Hyperlinked Pasta (PHP). PHP documentation remains on that napkin to this day.
You can read all of it here.