This weekend, I casually collaborated with a fellow twitterer while figuring out how to use a very cool feature in google docs. It is explained on this website:
So my friend Maureen and I tried out all sorts of different words to have google spreadsheets expand upon. You really have to play with it yourself. If you put in Sarah Palin and then drag down (hold down control key for PC, option for Mac) you get some fairly amusing results. You can put in famous actors, kinds of trees, etc.
Here is another link for the rest of the functionality.