Avengers: Age of Ultron review - Joss Whedon's exhilarating cavalcade of fun

The follow-up to The Avengers may be the harbinger of a new deluge of superhero movies, but if all turn out as entertaining as this one, what's the problem? Recently, there has been a shrill cultural panic at the thought of all the superhero movies due to be released in the next few years: Ant-Man, Captain America: Civil War, Doctor Strange, Guardians of the Galaxy 2, The Spectacular Spider-Man, Thor: Ragnarok, Avengers: Infinity War Part 1, Black Panther, Captain Marvel, Avengers: Infinity War ...