I have been lurking for a while and figured I should post my current project here since dwarf fortress and a lot of the discussion on this board has provided so much inspiration for it. I am currently working on a world generator. Not much thought has gone into whether I will ever put a game on top of it but the world generation part as well as other aspects of procedural content generation have always been very interesting to me.
Here is a sample:
(http://www.dungeonleague.com/wp-content/gallery/endorheic-basins/1267922031867.gif)
I am keeping a project log on my website http://www.dungeonleague.com/ (http://www.dungeonleague.com/) if anyone is interested.