When Zak Penn showed up after Incident at Loch Ness at L'Etrange Festival, he first asked the audience "did you trust the images you saw"? Is it possible to be so naive while working as a Hollywood blockbusters screenwriter? It's impossible to decide if he was true asking this question. Incident at Loch Ness, starring Werner Herzog playing himself, is a mockumentary. A generous and hilarious mise en abime of Penn's own experience as rouage du systeme.
Zak Penn is playing his own role as the producer of a 35mm documentary about Nessie. Herzog is the director. Herzog's becoming the cameraman when the crew vanishes. Penn is betraying Herzog by shooting himself a scene in which the sonar scientist, a super hot model, has to dive into the frozen Loch Ness with a tiny american-flag bikini, to turn on the microphone. Herzog is getting angry against Penn... Herzog is also having his own crew following him and making a film about him shooting a documentary in this mockumentary.
Before the trip, during the party at Herzog's house in Wonderland Avenue (L.A.), Herzog speaks about the people who have been kidnapped and raped by aliens. He wonders why most of them are overweight american women. There is no experience like this reported in Ethiopia or Nigeria. He also speaks about "ecstatic truth", a notion which seems to be the very essence of his art: "poetic, ecstatic truth. It is mysterious and elusive, and can be reached only through fabrication and imagination and stylization."

Werner Herzog seems to have always tried to film what happens when control seems to be lost. He must have showed a lack of control where it was almost total control. A dangerous game. Then he switched on the camera and started to shoot, moments of real life happened, the actors being confused and quite lost. Then it was possible for him to make the Bacchantes dance, while becoming Dyonisos himself. His own talent as an actor (Harmony Korine's Julien Donkey Boy) is part of the process of grandeur of his Kinski movies. He was more of an actor than Kinski himself. This is why Zak Penn is totally right to make Herzog play the Kinski role in his film.