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the/a (something) to end all (somethings)

That which outclasses or is more impressive than anything else of its kind could ever hope to be. Many people still believe that, from a technical filmmaking perspective, Citizen Kane is the film to end all films. I remember when we all thought this impressive machine was the computer to end all computers. Now it seems positively archaic compared to the devices we all use today.
See also: all, end

the something to end all sths

used to emphasize how large, important, exciting, etc. you think something is: The movie has a car chase to end all car chases.Many people said that World War I would be the war to end all wars.
See also: all, end, something, sths