Technical:
Oppenheim et al, Signals and Systems
Abelson and Sussman, SICP
The Fourier Transform and its Applications
Project Management for Construction
Nontechnical:
The Autobiography of Malcolm X
Schelling, Strategy of Conflict
The US Army Counterinsurgency Field Manual
Araki Photofile
...
All of them are too interesting.
I think everyone should take an hour to sit down and read the first chapter, even if they don't like books.
Oppenheim et al, Signals and Systems
Abelson and Sussman, SICP
The Fourier Transform and its Applications
Project Management for Construction
Russel, History of Western PhilosophyThe Autobiography of Malcolm X
Schelling, Strategy of Conflict
The US Army Counterinsurgency Field Manual
Araki Photofile
...
All of them are too interesting.