The Royal Mail has issued (or will issue) stamps to celebrate the upcoming Darwin anniversary.  There's also a miniature sheet, depicting the Galapagos Islands, and a variety of the specialised fauna found there.

I think they are particularly attractive, and it's good to see the profile of this most important of anniversaries maintained.  For more information, visit Norvic Philatelics - there is a much more information on the design, background information, and how to buy first day covers etc (and I also linked to their images).  I have to say, I never thought I'd blog about postage stamps, but there you go!

[Post edited to remove direct links to the images]