Updated: Mon, 05 Aug 2013 08:45:00 GMT | By Neil Smith
Avatar 3 and 4 announced: The next best movie sequels

Thor: The Dark World

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Christopher Eccleston has signed on to play a villainous role in the follow-up to Marvel's 2011 blockbuster, which will pit Chris Hemsworth's Asgardian god against an army of dark elves from the planet Svartalfheim. Following her no-show in The Avengers Natalie Portman will return as Jane Foster, with Game of Thrones' Alan Taylor inheriting the megaphone from Kenneth Branagh. The movie hits screens in October this year.