The ensemble action extravaganza includes James McAvoy (Wanted) as Professor Xavier (previously portrayed by Patrick Stewart).

Some environmentalists retain their antipathy to it, but green gurus such as James Lovelock, Stewart Brand and Patrick Moore have changed their minds and embraced it.

"People want to know if he's bald, or if he's in a wheelchair," says James McAvoy, taking on the Charles Xavier role from Patrick Stewart.