There's the supercool Google Trendanalyzer or Gapminder or whatever they call it these days. And the nifty little Google Visualization APIs. I like that you can add some of them as "gadgets" here. NYTimes.com has a lot of cool visualizations. You can make your own in their Visualization Lab, or IBM's Many Eyes project, which are the same thing.
This is a word cloud of the entire contents (titles and post text) of The Swift Rod of Justice v2.0, generated at Wordle.net. Apparently, I say "like" a lot. I'm real proud that "fuck", "cocks", "sex", ass" and "ninjas" made it in there. Suck on that, FasCists! I repeatedly violated your guidelines and managed to get away with it. Just like I said I would.