Check out the Google home page today. The Doodle celeberates the 30th Birthday of the Game Pac-man.
24th May 2010 Update: Due to popular demand, Google is making the game permanently available at www.google.com/pacman
Its not just an image, you can play a game of Pac-man there.
Pac-Man is an arcade game developed by Namco and licensed for distribution in the U.S. by Midway. This game was first released in Japan. Immensely popular in the United States from its original release to the present day, Pac-Man is universally considered as one of the classics!
An arcade game is a coin-operated entertainment machine, usually installed in public businesses such as restaurants, public houses, and video arcades. Thats the reason you see an Insert Coin Button on the homepage!
You would also be interested to read – Play your Good Old DOS Games