Steve Jobs by Walter Isaacson

The book is long so it was a bit daunting at first, and frankly hard to get into.  But it really picked up when it reached Jobs' return to Apple in the 90s, his rebuild of the company from the brink of bankruptcy and his ultimate fight with cancer.  At times it was hard to take as he really wasn't a nice person - at least if this portrayal is accurate.  His (and Apple's) success came at the expense of cruel honesty toward co-workers and others who did not meet his perfectionist expectations.  He also was not a great father to any of his three daughters though he did seem to have a respectable relationship with his only son.  No question he left an amazing legacy - all of the successful (and unsuccessful) Apple products bear his personal stamp and taste (minimalism, simplicity, the intersection of art and engineering...)  The biography itself is well researched (the author lists dozens of people he interviewed over a two year period) and written.  Worth the read if you're at all interested in the history of Apple.