Matt Smith, who plays Doctor Who in the eponymous TV series, has been added to the cast of Terminator: Genesis. Smith and body builder Aaron Williamson, who is rumored to play a younger T-800, are the latest to join the production, which is currently filming. According to the press release, Smith will play a new character who has "a strong connection to John Connor." Deadline hears that Smith's role will be more prominent in the second and third movie.