When George Clayton Johnson died on Christmas Day 2015, the science fiction world lost one of its giants. The free-spirited Johnson was a mainly a short story and teleplay writer associated with greats like Ray Bradbury and Richard Matheson in a loose knit collective known as The Southern California School of Writers. He wrote many story ideas and scripts for THE TWILIGHT ZONE, including the classic episodes “A Game of Pool” (starring Jack Klugman and Jonathan Winters) and “Kick the Can” (redone by Stephen Spielberg in TWILIGHT ZONE: THE MOVIE). Johnson wrote the first aired STAR TREK episode (“The Man Trap”), the story for OCEAN’S 11, and was a driving force behind the creation of the San Diego Comic Con.  Perhaps his best known work was a novel he did in collaboration with William F. Nolan in 1967, LOGAN’S RUN, made into a big-budget movie by MGM in 1976. David Zelag…