Andrew Wooster coded a little web spider to check out the various HTTP headers that are in use. He made a couple of interesting and entertaining findings.

He missed out on slashdot's Futurama themed "X-Fry" and "X-Bender" headers though:

X-Fry: I must be a robot. Why else would human women refuse to date me?

X-Bender: I'm one of those lazy, homeless bums I've been hearing about.

X-Fry: Hey look, it's that guy you are!

...

[via Sci-Fi Hi-Fi]