Ozh’s got a nice tour of the WordPress interface designs, from the initial release of 0.7.1 in May 2003, to the recently released 2.7 version. Check it out for a walk down memory lane, or just to see how the interface have changed – and improved – over the years.
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.