Superman actor thought his casting was 'a prank'To play this video you need to enable JavaScript in your browser.This video can not be playedSuperman actor thought his casting was 'a prank'CloseMore on this story.SubsectionCulturePublished3 JulyShareclose panelShare pageCopy linkAbout sharingRelated topicsFilmFollow Filmclose panelYou are now following FilmUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description