More of the best from my reading list:

More by James Trefil:
Reading the Mind of God : In Search of the Principle of Universality
The latest in physics and cosmology, written in a way that educates both the initiate and the newcomer.
A Scientist in the City
Ecological study of cities, with some interesting speculation about cities of the future;
Meditations at Sunset : A Scientist Looks at the Sky
His chapter "When the Water Won't Boil" explores the hypothesis of critical point universality, with boiling water, phase changes in iron, salad dressing and the Big Bang.
Of a Fire on the Moon, Norman Mailer
Quirky but gripping history of the Apollo program. Loved the launch of the rocket, but it did bog down a bit in the later chapters.
Why Zebras Don't Get Ulcers : An Updated Guide to Stress, Stress-Related Diseases, and Coping, R Sapolsky
An interesting exploration of the topic, by a neuroimmunologist, or at least someone who knows them. Describes how acupuncture works, and the medly of psychological and physiological responses of our bodies.
From Bauhaus to Our House, Tom Wolfe
In By Design, Caplan notes "A later penalty [of the Bauhaus' leadership] was exposure to Tom Wolfe's caustic wit" in this book. It's a hoot. Intro to PoMo. Read it in a sitting.
By Design : Why There Are No Locks on the Bathroom Doors in the Hotel Louis XIV, and Other Object Lessons , Caplan
An enjoyable exploration of design in the age of industry. An anecdotal style, but Industrial Design provides a unifying focus. Lots of memorable turns of phrase.
Who Got Einstein's Office?, Ed Regis
The history of the Institute for Advanced Study and its best characters: Einstein, Gödel, von Neuman, Oppenheimer, et al.
Another by Steven Vogel:
Cats' Paws and Catapults : Mechanical Worlds of Nature and People
Comparisons of evolved and engineered technology; just right for an engineer with a fondness for biology, perhaps enlightening to one ignorant of it.
More by Donald A. Norman:
The Design of Everyday Things
Top-notch, well-designed, lots of references with descriptions. Hardback title is "The Psychology of..."
Turn Signals Are the Facial Expressions of Automobiles
Aspects of design worth considering, but seldom considered.
Home : A Short History of an Idea, Ritold Rybczynski
It's interesting to get a new look at something we take for granted. The author's treatment demonstrates that much of our "tradition" is really just recent memory.