Cute illustration of different content types in HTML (though, personally, I would put sectioning content — section, article, nav, aside — into their own group).
An excellently written zero-edit change proposal from Edward O'Connor and others, refuting issues raised by Shelley Powers (I offered to help with this change proposal but I never followed through).
Standalone embeddable widgets from Google that you can drop into any web page. The maps widget finally frees the maps API from the tyranny of coupling a domain with an API key.
This is funny in a very, very geeky way.
Useful markup statistics from Google, complete with snotty commentary.