An infinite poem generator that finds tweets that rhyme on Twitter. I was talking about doing something like this for lyrics with Furny -
http://www.longestpoemintheworld.com/
The Hacker News discussion of that site has some very useful links to references for computational rhyming -
http://news.ycombinator.com/item?id=788117
In the comments of this blog below, K. Bender links to their statistical study of the iconography of the goddess Venus in which they discover that artists production of Venus images seems to fit a well known bibliographic equation. You can download the relevant papers (and buy their books) here -