Then: Nolan Bushnell founded Atari in 1972, but it didn't become big in homes until 1975 when Atari started selling home versions of Pong, a two-dimensional sports game which (sort of) simulated a game of table tennis. Pong helped Atari become a household name and introduced very basic, at-home video games to the masses.
Now: Play Halo with friends in different countries, watch an HD movie on Blu-ray, play tennis, lose weight all through your PlayStation 3, Nintendo Wii or XBOX.