Just finished reading Matt Haig's 'brand Failures: The Truth about the 100 biggest branding mistakes of all time'. Anyone with even a passing interest in business will find it enjoyable, and easy to dip in and out of because of its format. Gerald Ratner, New Coke, Toxic Shock, Exxon Valdez, McLibel, Ben-Gay Aspirin and Smith and Wesson Mountain Bikes, they're all there!
First published in 2003 but still pertinent and readable.