I remember Knuth’s algorithm books from way back when. They were reference books. If you wanted a discussion of methods for doing something and their likely time and resource costs, Knuth was the go-to book. That was back when there were a lot more open questions about computer algorithms. For example, almost everyone uses a quicksort nowadays; that’s the usual sort algorithm built into modern languages. Knuth is still a useful reference and, like most reference books, fun to read in small quantities. Still, reading the whole thing is like being the guy who has read every page of the Chilton repair guide to his car. He’s either very into automobiles or very unlucky.
P.S. Donald Knuth was also the guy who came up with the Potrezebie metric system for Mad Magazine. Search for it.