TAoCP
From StoneHome
A boxed set of what many people believe to be the world's definitive work on computer science for the last 20 years. Though pricey, this series is worth every cent a hundred times over; the importance of this work cannot be overestimated. It is frequent for programmers which breeze through books considered difficult to grind to a sudden halt about halfway through Knuth book one; common is the cry "I had never been challenged until," and the suggestion that these books taught more than a freshman or sophomore year. When your copy arrives, brace yourself; this book not only opens your eyes, but tears your eyelids off and makes you eat them. Knuth's wit, capacity for describing the difficult, and thoroughness in both the examples and exercises are without match.

