... The Space Merchants by Pohl and Kornbluth

Legion2 passed his Scifi Masterworks copy of this on to me a few weeks ago.
It was a quick read that took me almost two weeks for it's 180 pages due to work pressures stealing my lunchtimes and train trips.
Given it's vintage (from the '50s) the story is eerily predictive of a world of excessive advertising, consumerism and corporate control of the government - at times it feels like you're reading an expose of current underhanded advertising techniques.
The story itself is interesting and if you can get your lunchtimes and train journeys then its well worth the short reading time.