By Oliver Lyttelton
This week sees the release of Rogue One, the first ever standalone spin-off of the beloved Star Wars franchise. Set immediately before the events of 1977’s A New Hope, it also sees the return of arguably the most iconic villain in cinema history: Darth Vader. We all associate the helmeted Sith Lord with the voice of James Earl Jones, who returns for the new film, but in fact he's only one of many actors who've played the character in the franchise. Here are some of the most notable ones over the last 40 years.