Why is "The Man from U.N.C.L.E." trending?

Wikipedia Overview

The Man from U.N.C.L.E. is an American spy fiction television series produced by Metro-Goldwyn-Mayer Television and first broadcast on NBC. The series follows secret agents Napoleon Solo, played by Robert Vaughn, and Illya Kuryakin, played by David McCallum, who work for a secret international counterespionage and law-enforcement agency called U.N.C.L.E.. The series premiered on September 22, 1964, and completed its run on January 15, 1968. The program was part of the spy-fiction craze on television, and by 1966 there were nearly a dozen imitators. Several episodes were successfully released to theaters as B movies or double features. There was also a spin-off series, The Girl from U.N.C.L.E., a series of novels and comic books, and merchandising. The cartoon characters Tom and Jerry appeared in a pastiche of the series, "The Mouse from H.U.N.G.E.R.", with secret agent "0-0-1/7" Jerry on a mission to steal a refrigerator full of cheese from evil mastermind "Tom Thrush".