Derek Lieu is the cartoonist responsible for the webcomic Kick in the Head. He noticed that most anime opening sequences have the same features:
It's always amused me the repeated imagery that exist in anime opening credit sequences. This video doesn't cover them all, but it has a lot of the big ones. Interesting thing I learned, if a character is running it's overwhelmingly to the left of the screen.
So he put together this video, showing the openings of 93 different anime series. There's a complete list of them at the video link.
via Geekosystem | Lieu's Website