What do LaTeX, Magical Staves and the Simpsons have in common?

I'm using a lot to write my thesis. Today, when searching for something in the complete manual (PDF), I came across this:

A good humor day

Don't know, maybe because it's the weekend, but this has turned up to be a good humor day:

1. 20,000 Credit Cards
2. XXX Star Wars
3. Creationist Kit
4. 101 Simpsons Quote