In 1994, Jeffrey Katzenberg, boss of the Disney cinema branch, slammed the studio door. He then founded with Steven Spielberg and David Geffen music producer his own independent production company: Dreamworks SKG. Very quickly, the three men created a division specializing in animation: Dreamworks Animation. From Ant to the phenomenal success of Shrek, how has this small studio become a serious competitor of Disney in just a few years?