Mark Ruffalo
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Superhero film 'like no other'

17 April 2012 Last updated at 07:04 BST

For millions of comic fans around the world the imminent release of the film The Avengers is one of the most eagerly awaited events of the year.

The film features a whole array of superheroes drawn from America's Marvel comic book universe including Thor and Captain America.

The BBC's Tom Brook reports.