sentences:  Some "Star Trek" films and television episodes used the "Star Wars" animation shop, Industrial Light & Magic, for their special effects.When Roddenberry was honored at a "Star Trek" convention late in life, a congratulatory letter from Lucas was presented by an actor dressed as Darth Vader.A few years earlier, Roddenberry had contributed an entry in honor of "Star Wars" and Lucas at a convention honoring the latter.