A hero to science fiction fans and the Asian community alike, George Takei was an actor, writer and activist who earned his place in pop culture history as Hikaru Sulu, helmsman of the starship Enterprise on “Star Trek” (NBC, 1966-68) and six of its subsequent feature film spin-offs. Takei had been a prolific actor on television and in films and theater prior to “Star Trek,” and he continued to appear in a wide variety of projects after its demise, including the science fiction series “Heroes” (NBC, 2006- ) and as a popular guest announcer for Howard Stern’s radio program. A well-known