I know it’s absolutely insane to try to reduce Eric Evans’ amazing book into just a few pages, but stupidity won.  I think it’s still useful as a “next to the coffee mug on your desk thing” if you’re just starting off with DDD.  So download the free Domain Driven Design Reference Card at http://refcardz.dzone.com. Small warning: it’s not useful unless you’ve read Eric’s and/or Jimmy’s book or have attended a DDD course.
I’ve tried to keep it true to the book.  I’ve aslo added a reference to a couple of additional patterns right at the end, after some quick chats with Eric and Jimmy.  Given the space constraints, I decided to leave out the CQRS work.  It feels better anyway, since this meant as a cheat sheet for people starting out.