KRT PLUGGED IN STORY SLUGGED: STARWARSEFFECTS KRT HANDOUT PHOTOGRAPH VIA LUCASFILMS (May 18) John Knoll is the visual-effects supervisor for "Star Wars Episode III: Revenge of the Sith." He and co-supervisor Roger Guyett oversaw every explosive space battle, every light saber duel and every alien creature populating the film's 11 worlds. (jt) 2005 Handout and Handout