Part of good communication is presenting compelling information in a novel, transparent way. Two sites do this particularly well, combining graphics-geek-chic with sophisticated messages.
Omnibrain highlights Why we have pie charts. This one is entitled “Why things happen.”:
Jessica Hagy’s Indexed is consistently one of the cleverest blogs around. A couple examples of her work:
Posted by pheidole 
Survive and Thrive in Grad School 