If you enjoy the stunning special effects in films like “Avatar” and the Marvel Universe, don’t forget to express gratitude towards the pioneering 1982 sci-fi film “Tron.” Although its computer-generated graphics may seem outdated today, “Tron” was a groundbreaking movie that demonstrated the potential of CGI, making it worthy of a devoted fan base. Starring Jeff Bridges as brilliant computer engineer Kevin Flynn, this movie tells two interconnected stories: One in the real world and another in a digital realm where Flynn battles the avatars of his adversaries. Released to widespread acclaim among audiences and critics, “Tron” was even nominated for two Academy Awards. (Interestingly, “Tron” wasn’t considered eligible for the visual effects category due to the Academy’s belief that the film had manipulated the rules by employing computers, as director Steven Lisberger shared in an interview with SFGate.)