Here's something you'll find incredibly interesting if you don't already know about it.
Take any article on Wikipedia. Any article.
Then follow these instructions:
Click on the first link on that article text not in parentheses [brackets] and/or italics.
You'll eventually end up in Philosophy.
This is however not full-proof. As of May 26, 2011, this happens with 94.52% of all articles on Wikipedia. The rest of them either link to pages with no other links or lead to pages that do not exist. Some of them get stuck in loops.
As an example, I started with 'Asian Cuisine' and eventually got to Philosophy.
I came to know of this awesome fact from xkcd.
And the picture is taken from Wikipedia itself!