4. In 1968, Star Trek featured the first interracial kiss on American television.
NBC, nervous about the reaction the kiss would cause in the nation, insisted on shooting alternate takes in which Kirk and Uhura didn't kiss. Nichelle Nichols received tons of surprisingly positive mail from fans across the country, including a letter that stated: "I am totally opposed to the mixing of the races. However, any time a red-blooded American boy like Captain Kirk gets a beautiful dame in his arms that looks like Uhura, he ain't gonna fight it."