The Best Animated Backgrounds Of 2D Fighting Games
http://kotaku.com/5977912/

This article at Kotaku has a nice collection of art used as backgrounds in some games. The article also reminds us that games are at the intersection of art and science.  In games, art means visual arts, sound, music, photography, dance, literature but also the artistic nature of the creation and expression process. The science of games involves what everyone knows, computers, but in addition, psychology, sociology, physics, biology, anatomy, geography, geology, astronomy, mathematics, logic, and various more specialized areas including behaviour economics and political science.  In the end, a game has the purpose of play and understanding play and the player is key for the art and science of games to work.