Sneek peek: James McAvoy, January Jones and Kevin Bacon in star-studded 'X-Men'

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Sneek peek: James McAvoy, January Jones and Kevin Bacon in star-studded 'X-Men'

James McAvoy (left) and Michael Fassbender as Professor Xavier and Magneto in newly-released stills from X-Men First Class

All photos: © 20th Century Fox