Michael Shannon was another casting choice that seemed really terrible to me in the beginning but I ended up loving. I had only seen him in one movie prior to MOS, It was a movie called Grand theft parsons. I let myself get too caught up in his previous role as a burned out hippy to expect anything great from him as Zod,but I was proven completely wrong. He was fantastic. I hadn't thought of that! Dr.Manhattan is all around probably a pretty good example of how far Snyder is willing to go to stick to the source.