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James McAvoy: Why superheroes fascinate me

25 May 2014 Last updated at 11:58 BST

The lead in the new X-Men movie cut his teeth in that gritty TV series Shameless and his career took off like a rocket after star turns in Atonement and The Last King of Scotland.

When the BBC's Sophie Raworth met him, James McAvoy spoke about a range of issues - from why superheroes interest him, 3D films and the cost of cinema tickets.... to the Scottish referendum.

You can watch the Andrew Marr Show in full on the BBC iPlayer.