Here's an awesome appreciation of Calvin & Hobbes. Altho it may be churlish to say so, I think it maybe suffers a bit from the writers' seeming belief that comic strips started with Garfield. Of course, you don't need to know anything about Winsor McCay or George Herriman to appreciate Calvin & Hobbes (altho Watterson obviously knows a lot about the comic artists of the past). And you don't need to know anything about earlier comics to be able to evaluate how much Watterson's work stood apart from most everything else that was running in the papers from 85-95. But their enthusiasm sorta runs away with them and they end up sounding like they think Watterson sprung fully grown from the head of Zeus or something. Especially when they're talking about the art, the broad historical statements just really don't hold up. Breathed was also pushing the envelope, esp. with his Sunday strips. And both of them were really trying to re-introduce some of the artistic depth and freedom of stuff like Little Nemo or Krazy Kat back into the Sunday funnies.
But, like I said, that's kinda churlish quibbling. Their list, while not my list (I don't think any C&H best-of list is complete without tyrannosaurs in F14s), is pretty solid and includes some of my faves. Lunboks!