I got linked the other day to Zen Pencils, a page where the artist creates short comics to illustrate motivational quotes from famous people, such as Feynman, Picasso, Muhammad Ali and Carl Sagan. The hit/miss ratio is very high, and definitely worth a read.
Not only the art is good, the quote selection is interesting, but the author also does a great job of talking about and introducing the quoted person, and linking good examples of that person’s life and work for further reading. After finishing a quick read through the archive, I’ll probably do a second read to follow the links more closely.
Here is my favorite so far: Make good Art, from Neil Gaiman (the comics about art are usually the best ones)