Here's a fun tool you can play around with. You may have to download the Flash player:
I made this chart back in 2009 but never quite finished it. A few days ago I decided to get 'er done, but when I opened the old document the dismal realization hit me that I had completely forgotten how to make charts in Adobe Flash. What a slog the last 46 hours have been. Anyways, enjoy.
The original is available here if you want to use it in your own posts, or if Blogger of Google Reader won't play it for you.