I've always suspected they've done that.

[Fudzy]

Game screenshots have always seemed too polished to be in-game.

http://www.joystiq.com/2007/08/15/ea-shows-clearest-bullshot-in-a-long-time/

 

[doobiwan]

Well the EA ones typically.

Kudo's to Penny Arcade for coining the term.
http://www.penny-arcade.com/comic/2005/09/12