It is a well-known fact that all movies which end with the word "world" must, by law, contain Yul Brynner. The most famous of these is, of course, Westworld, closely followed by its cinematically inferior sequel Futureworld. At possibly the extreme end of obscurity lies The Light at the End of the World, in which Yul Brynner plays a pirate leading a crew of Italian extras who like to peel cute monkeys with large knives. He is opposed by a lighthouse operator played by Kirk Douglas, who turns into a ninja upon meeting the pirates and proceeds to annihilate them.

In the ground-breaking Cool World, Yul Brynner posthumously played the part of a minor cartoon police officer, using a recording taken of him prior to his unfortunate death from lung cancer (which altered his voice beyond recognition). Not to be outdone, Steven Spielberg is including a digitally re-created Yul Brynner in the upcoming War of the Worlds.

Other, less-well-known roles include that of an elder vampire lord in Underworld, a conniving record-company accountant in Wayne's World, a morose teenage girl in Ghost World, and a suitcase full of money in It's a Mad Mad Mad Mad World.

Other highlights of his career include authoring Brave New World, personally having fathered everyone to ever appear on The Real World, and inspiring Madonna to write the song "Material Girl", as clearly evidenced by her use of the phrase "Material World".