Calvin and Hobbes and Swamp Thing

One thing that amazed me about Bill Watterson was his ability to draw landscapes and scenery as well as the shenanigans of a boy and his stuffed tiger.  His mastery of pacing, body language and facial expressions would have been enough to make Calvin & Hobbes a great strip, and the fact that they operated in such lush environments really helped to put it over the top into classic territory.  Watterson could have just as easily illustrated a straight up adventure comic.