Engineering related books:

iWoz by Steve Wozniak and Gina Smith
Hackers – Heroes of the Computer Revolution by Steven Levy
Where the Wizards Stay Up Late – the Origins of the Internet by Katie Hafner and Matthew Lyon
The New Thing. A Silicon Valley Story by Michael Lewis
The Idea Factory Bell Labs and the Great Age of American Innovation by Joe Gertner
The HP Way: How Bill Hewlett and I Built Our Company by David Packard
Bill & Dave – How Hewlett and Packard Built the World’s Greatest Company by Michael S. Malone

Science related books:

Surely You’re Joking, Mr. Feynman! by Richard Feynman
What Do You Care What Other People Think?: Further Adventures of a Curious Character by Richard Feynman

Technology related books:

Free As in Freedom
Free Software Free Society
The Art of Deception by Kevin Mitnick and William Simon
Hackers & Painters. Big Ideasfrom the Computer Age by Paul Graham
Ghost in the Wires

Miscellaneous books:
How not to Die by Michael Greger M.D.