Steven points me to the live recent changes feed for Wikipedia. This is sort of a neat way to look at how dynamic the project it [good news and bad news to librarians, I know] but also to get a ton of examples, an overview if you will, of what a good update looks like, or what all these updates are doing. You see logged in users, annotated changes, links to more information, and nonsense pages deleted so fast it can make your head spin. Fascinating.