Sorry but as a Russian I can't perceive this seriously. With all my respect to Herzog it's NOT a true depiction of Russian faith and superstitions but rather a Borat-like comedy disguised as a highly objective and free from personal opinions documentary report.
If this movie has made you think that people like notorious exorcist Wisard Vasilyev, self-declared messiah Vissarion etc. are of any importance for the general Russian public then, well, you ought to consider imaginary movie called e.g. "Faith and superstitions in US" shot with a camera which thoughtfully dwells on ceremonies by Rev. Sun Myung Moon and Charles Manson.
Extremely tendentious and pretentious "Bells from Deep" can't be recommended to anybody except Russians: in their eyes it definitely deserves 10/10 for campiness (and BTW poses a question about relevance of other Herzog's ethnographic movies).