With pop-culture brand recognition like no other auteur, he walks the walk and talks the talk … in that inimitable voice. Werner Herzog – film-maker, visionary, adventurer and first among equals of the New German cinema – is now the subject of a highly enjoyable new documentary from Thomas von Steinaecker, who has assembled an A-list gallery of interviewees to talk about knowing or working with the great man; these include Wim Wenders, Volker Schlöndorff, Nicole Kidman, Chloé Zhao, Joshua Oppenheimer, Robert Pattinson and many more.

There’s something almost Wellesian or Hitchcockian in the way Herzog uses celebrity to keep getting pictures made, and his work rate is one of the marvellous things about him. Calling a film-maker a “dreamer” sounds hackneyed, but it does justice to his idealism. Perhaps no other description will do.