What Have You Done Today To Make You Feel Proud?

While reading an article on Slashdot about a cheap NASA spaceship this week, I learned to my surprise that Dr Alan Weston invented bungee jumping in 1979. Unless you count ignorant savages and that, who were doing it 1500 years ago.

Now, as we all know, Al Gore invented the Internet, John Keogh invented the wheel and I invented fire. Just now. How about you? What amazing invention have you come up with that everyone's been using since the dawn of time no-one has ever thought of before?