Perfect balance of nostalgia, sentimentality, humor, sarcasm, intellectualization, and vulnerability. He could easily fall over the line into laying it on a little too thick, but he shows restraint when necessary. I honesty can't think of a single book, movie, television show, etc. that gets as much right.
Not to mention, the very drawing itself, and the trademark "work in progress" thing, is worthy on it's own.
Having fun at skiing's expense since '09.