The pattern shown by Mamagus is called Arkansas Crossroads. I just finished one, and it went together pretty quickly. Also, on the QB just the other day was one done with the X-blocks in a pinkish color, done by the husband of one of the members.
I also like the one pictured above, by thimblebug. Very creative, and doesn't require a pattern purchase. Her sashing alternates green and cream, but you could make your sashing any color(s) you choose.