I just watched a short biography of Bonhoeffer available at Netflix. It was very interesting. He taught his theology students that when they read the bible, God is speaking to them, personally. It was a concept many did not consider in those times.
I also rented a Bonhoeffer biography from Netflix, but it was movie length, IIRC. Very good.
Sounds interesting. Do you remember the name? (I hate the Netflix search engine.)