Wholly owned by everyone's favorite billionaire, Corbis is more than just a Bill Gates side project. The company has quietly collected more than a million fine art and historical images, the by-products of which are some stunning CD-ROMs. Critical Mass covers the science, scientists, and situations that came together in Los Alamos, New Mexico, to produce the world's first atomic bomb. The history is fascinating, the user interface is elegant, and the images are just plain cool, from photos to video clips to declassified goverment documents.

Harold Check