The Classic-Space Group on Flickr is holding a contest hosted by Nightowl 280. You are challenged to build a microscale fleet (and also a ship interior). Warning, Mike Yoder has already set the bar pretty high with his fleet.
Thanks are due to Linus Bohman of The Brothers Brick. I saw the fleet on Brickshelf but didn't know of the contest until following the links from Linus' blog post.