Definitely one of the best comic strips out there. If you recall the dance sequence on the back cover of the 10th Anniversary Book, here it is animated into a gif. It's a strange experience to see Calvin and Hobbes, well, moving.
That comic got me through Desert Storm. One of our captain's was a fan and his wife sent over 2 or 3 "books" filled with chronological comic strips. It was the best. My favorite of all times is still this one: