I'm a sucker for anything Herzog does, so I'm there.
However, I prefer his earlier rough-around-the-edges films with the likes of Klaus Kinski and Bruno S. (and even that gaggle of unruly midgets and dwarfs) to his more recent 'slick' films like INVINCIBLE and Rescue Dawn.
I'm not a big fan of Cage anymore, so I can only hope Herzog gave him the full gun-to-the-head Kinski treatment and made him crawl through mud and jump on cactus and eat worms and such.
Of course, nothing will ever top the LAUGHING GERMAN MIDGET.
Somebody needs to start tacking him on 'fail' clips, just like that Keyboard Cat.