This XKCD chart is mesmerizing – it deserves to be viewed in it’s full extent, so please click through and peruse it.
That one reminds me of an old xkcd about the difference between a thousand and a million or a million and a thousand. I think whenever we’re talking about the national budget or major monetary policy issues, news organizations and the government should pick a single unit of “-illions” and stick to it. “The Super Commitee failed to find 1200 billion” worth of cuts. “Our deficit is 14,000 billion.” It’ll make people sound silly when they want to cut a certain program that they don’t happen to like but it costs “.01 billion”.