6. Religulous
This documentary number 6 on our list of best anti-religion documentaries of all time, examines and challenges religion as such. The combination of words ridiculous and religious in its title gives us an idea what is the main topic of this documentary. It is directed by Larry Charles and written by comedian Bill Maher, who appears in the documentary as well. Bill Maher interviews people around the globe about God and religion. In addition, he does it in a satirical way which makes this documentary even more interesting to watch. It was released in 2008, and could also be watched on Netflix.