The Phaidon Atlas is an amazing work. At 800 pages it contains all of the major works of architecture from 2000 to its publication date of 2008. It is a beautiful 12" x 17" hardcover book with multiple photos of most buildings and just the right amount of information on each structure. This is a monster of a book - so much so that it comes with its own carrying case
This book belongs on every architect's coffee table, especially if they like modern works of architecture.
If this volume is took big, no worries, they also publish a condensed version of the book for less money.