Much as I enjoy xkcd like any other nerd, I sometimes find Randall Munroe's sense of humour grating: self-satisfied, snarky, and (especially in sexual matters) boastful and oversharing. (This latest part may well be pure wish-fulfilment on his part: I'm ignorant of his real-world life.)
But just to keep me on my toes, here is his tribute to Fred Rogers, a mainstay of American children's television, of whom I was previously ignorant. It is hard to imagine someone with a more different sensibility.
The NYT's 2003 obituary for Fred Rogers offers more information.