"I Am Legend" was more than just a film; it was an experience. Based on Richard Matheson's 1954 novel of the same name, the movie presented a world overrun by a mutated strain of the measles virus, which reanimated the deceased. Will Smith's character, Robert Neville, found himself immune and, thus, the last human survivor in New York City. The film's blend of isolation, survival, and a dash of hope resonated deeply with audiences worldwide.