About a year and a half ago I went both to the permanent exhibiton of the Charles M Schulz museum in California, and to a temporary exhibition of his work in London. I bought this while I was in Santa Rosa; it's a collection of pieces paying tribute to Schulz's work, some of them very personal - one or two of the artists were lucky enough to meet or know Schulz himself, and most of them have some thoughtful things to say about the Peanuts strip, which was pretty progressive for its time. To call attention to a couple of them, Jeremy Sorese has an interesting meditation on where the adults are in the Peanuts universe; Liz Prince explores the Peppermint Patty/Marcia relationship; and Hilary Price recalls a magical afternoon in Santa Rosa. It's a lovely book (apart as noted above from the Tony Millionaire contribution, which really misses the mark) and you can get it here.
This was my top unread comic in English. Next on that list is a Doctor Who comic, Gaze of the Medusa, by Gordon Rennie, Emma Beeby and Brian Williamson.