Alejandro Vasquez of digitart.net has published a Blueprint Cheat Sheet. Excellent, I'm using Blueprint in my (so far failed attempts) at redesigning this site and the current theme is also based on Blueprint.
Head on over to Christian Montoya to download the cheat sheet.Meshup - The Theme
The theme currently styling this site is called "Meshup" and utilizes the Blueprint CSS framework which has made the development of it so much easier than it normally would be.
I've just upgraded Blueprint from v0.5 to v0.6 (SVN version) and so far it looks like that was a good move.
Now all I need to get to get sorted is all my other stuff, like archives, alternative front page view (in progress, jquery cookies are fun) and the other ideas I have.