In this October 19, 2007 photo actor Walter Koenig attends Spike TV's 'Scream 2007' awards at the Greek theatre in Los Angeles. Walter Koenig, the actor best known for his role as Pavel Chekov on the groundbreaking television show "Star Trek" and in the franchise's first seven movies, has died at age 90, his representative said Monday. (Photo by Chris DELMAS / AFP via Getty Images)