Given multiple reviews about 1964 tv series The Man from U.N.C.L.E., each offering insights, opinions, or criticisms on a single topic, merge them into a single, cohesive review. When reviews offer opposing viewpoints, ensure that both perspectives are represented in a balanced way. Structure the text to flow smoothly, weaving different points together to create a well-rounded summary. Ensure the text remains clear and easily understandable by removing any jokes, insider references, or quotes.Aim for a polished and engaging tone, creating a review that feels comprehensive and reflects the diversity of opinions. The text should be very long. Here the given reviews: ["'The Man from U.N.C.L.E.' was an bona fide television phenomena when it first aired, in 1964. The brainchild of producer Norman Felton, who was a fan of Ian Fleming's 'James Bond' novels, the missions of the United Network Command for Law and Enforcement (U.N.C.L.E.), would be set on an international scale, pitted against SPECTRE-like THRUSH, an organization composed of terrorists, anarchists, and megalomaniacs. In the original concept, a 'civilian' would be drawn into the intrigue, each week, to aid U.N.C.L.E. on a mission, and provide a link that viewers could relate to. Felton sent his notes to Ian Fleming, asking the author to create a name for the series' hero, and Fleming came up with 'Napoleon Solo', the last name 'lifted' from a gangster character from 'Goldfinger'. He offered a few other minor suggestions, and gave Felton his blessing on the endeavor. With a 'pedigree' like this, how could the series fail? Veteran writer Sam Rolfe came on board to write the pilot script and co-produce, and an excellent cast was assembled. Oscar-nominee Robert Vaughn, who'd worked with Felton on the series, 'The Lieutenant', was cast as Solo; young Scot actor David McCallum, fresh from THE GREAT ESCAPE, would play the supporting role of fellow agent Illya Kuryakin; and, in a casting coup, legendary character actor Leo G. Carroll, who'd portrayed a spy chief in Alfred Hitchcock's NORTH BY NORTHWEST, would assume the same function for U.N.C.L.E. (Getting Carroll required some creativity; while his 'official' birth date was listed as 1892, he was actually born in 1887, and NBC would never have permitted a nearly 80-year old series regular...Felton stuck with '1892', and made his scenes as easy as possible, which worked, as Carroll survived the entire series' run, not passing away until 1972). Shot in black and white for the first season, and featuring a marvelous 'bulletproof glass' opening sequence, with a majestic, John Barry-influenced theme (by Jerry Goldsmith), 'U.N.C.L.E.' debuted in 1964 as both FROM Russia WITH LOVE and GOLDFINGER were in theaters, and soon became a major hit...then reached unprecedented heights, when McCallum, with his 'Beatles'-like haircut, captured the attention of younger fans caught up with the 'British Invasion' of Rock music, and became an overnight sex symbol nationwide. McCallum's role was quickly 'beefed-up' to co-star status, and U.N.C.L.E.-mania had begun! With a terrific mix of action, tongue-in-cheek humor, and what NBC would allow for sex, the first season offered many memorable moments, including the first appearance of future 'Star Trek' stars William Shatner and Leonard Nimoy, together, in an episode (Shatner was the heroic 'civilian' called in to aid U.N.C.L.E., Nimoy was the villain's henchman). NBC was very pleased with their hit series, and Vaughn and McCallum were soon doing 'cameos' in other series, as well as promotions for the Peacock Network. One of the first 'primetime' series to be extensively marketed, a line of U.N.C.L.E. merchandise appeared, with dolls, toy guns, lunch boxes, comic books, model kits, cologne, clothing, and more filling store shelves. It was a heady time for everyone! For the second season (1965-66), 'U.N.C.L.E.' was produced in color, and a 'guest' list of legendary stars lined up for appearances on the series, but despite respectable ratings, the overall quality of the show fluctuated, with some episodes downright silly. Just as the 'Bond' films peaked in popularity in 1965, with THUNDERBALL, then began to decline as the 'craze' subsided, the novelty of 'U.N.C.L.E.' began to wear off, and new 'line' producers were more interested in comedy and campiness, discarding, by season's end, any 'edge' the series first had. By the third season (1966-67), 'camp' was the rule; a spin-off, 'The Girl from U.N.C.L.E.', flopped; and the writing was on the wall that the series was on it's way out. The producers made a last-ditch attempt to return the more dramatic elements to the series at the start of it's fourth season, in 1967, discarding the campiness, and, unfortunately, nearly all of the humor, as well, but the newly 'serious' 'U.N.C.L.E.' had lost it's audience, and the show was canceled in early 1968. The impact of 'The Man from U.N.C.L.E.' cannot be minimized. It paved the way for 'The Wild, Wild, West', 'Get Smart', 'Mission Impossible', and all the other 'spy' shows that followed in it's footsteps, became a 'cult' favorite after cancellation that is still generating interest, to this day (with successful conventions, a 'reunion' TV-movie, and a steady stream of fan mail continuing to be sent to Vaughn and McCallum, 35 years after the final episode first aired), and there is talk of a feature film in the works. And, as we fans will always remember, without the cooperation of the United Network Command for Law and Enforcement, none of this would be possible!"] Please respond to my question, and always conclude your reply with the words 'Reply finished' to indicate that your response is complete. Ensure that the text is fully formed without any placeholders such as '[Conclusion]' or '[Placeholder]'. Make sure the reply is fully contained before these words and is not cut off prematurely. Thank you.