The World is Flat by Thomas Friedman has garnered more postings and reviews than it needs already. It's a good book. I bought it as one of three books for my son who was heading off to freshman year as a business major at the University of Maryland and I read it before he left. Definitely worth a reading - or listening.
An idea beyond the book that I find very interesting is that the author has talked about the book becoming for it's "final" edition a wiki version that could be constantly updated - this being perhaps the only way to really keep it current & relevant.
Friedman started the book in March 2004 and finished up in December. At that time, podcasting didn't really exist. A year after the book came out you could download the audio version of The World Is Flat on Apple's iTunes site. The flattening is speeding up.
Check out Friedman's site for updates: http://www.thomaslfriedman.com/worldisflat.htm
Watch Friedman on video at MIT http://mitworld.mit.edu/video/266/
BTW, the 2 other titles I bought for my son were Freakonomics : A Rogue Economist Explores the Hidden Side of Everything by Blink: The Power of Thinking Without Thinking by Malcolm Gladwell.