George Clooney's experience working with director David O. Russell on the 1999 film Three Kings became deeply adversarial when Russell directed his frustrations at crew members. Clooney attempted to intervene respectfully, urging Russell not to humiliate those unable to defend themselves. Russell responded with verbal provocation and physical assault, including head-butting and choking Clooney, who fought back forcefully during the confrontation.

Following Russell's eventual apology, Clooney publicly declared the production "the worst experience of my life," marking a rare moment of candour for the typically diplomatic actor. Despite his ordeal, Clooney acknowledged Russell's creative talents and predicted future Oscar recognition, whilst firmly closing the door on any future collaborations. The incident became a notable example in discussions about director conduct and workplace standards in filmmaking.