Fitz is actually one of my favorite Herzog films, maybe one of my favorites period. Say what you want about Kinski, but he truly was a fine actor that gave even shit movies like Crawlspace (entertaining as it was) his everything. He worked for money shamelessly and honestly, and thankfully snubbed a lot of annoyingly self-important auteurs who wanted him at his critical peak. For an entertaining read that you'll need to take with a grain of salt to enjoy, I recommend his autobiography. A lot of it is most likely fabricated, but it is pretty entertaining.