Here's a trailer:
Moria describes it as "one of the most memorable of all fifties sf/horror crossovers. ... a classic and a rather fine monster movie." 1000 Misspent Hours calls it "one of the most famous sci-fi/horror movies of the 1950’s" and says, "The importance of this movie from a B-horror fan’s perspective ought to be fairly obvious. But The Fly is also significant for the development of cinematic science fiction as a whole." The New York Times says it "happens to be one of the better, more restrained entries of the "shock" school."