While looking at Wikipedia, I stumbled upon a nice fact: If you press ‘Alt-X’ on any Wikipedia page, it will take you to a random Wikipedia page. Nice feature if you’re a curious soul and like stumbling upon knowledge. (Although the first thing you will learn is that 75% of Wikipedia consist of geography entries).
For more interesting tidbits, check out Wikipedia’s keyboard shortcuts.
My friend Greg will love this. Last year, he wrote a program so any word that he clicked on online would take him to the corresponding Wikipedia entry.