Did anyone get the 10th anniversary book? It had some really good write ups on Watterson's fight against licensing, his inspiration for the characters, the thought processes behind some of the memes of the strip (the snowmen, Calvin's wagon), and a lot of his personal favorite strips. I don't think any of it was featured in the box set, so I'd definitely grab it if I saw it again.
I'll probably be posting in this thread a lot.