Mark Jaquith reveals a list of 16 US agencies that are confirmed to be using WordPress, either internally or publicly. Among those are the Air Force, Army, the NSA, and the DEA. Full list here, released on WordCamp San Francisco 2008.
Thord Daniel Hedengren is a designer, writer, and blogger, and also the former editor of The Blog Herald. He used to be a hotshot in the gaming industry in Sweden, but sold everything and went International. Most recently he wrote a book called Smashing WordPress: Beyond the Blog, and does loads of kickass design.