Pugach is frightening, literally
Some of you may be interested to learn that Burt's last name, "Pugach", literally means 'someone who is out to frighten you' in Russian and Ukrainian. In fact it almost sounds like "bogeyman". Eastern European names, particularly Ukrainian have some strange origins and etymologies. Ex "Mogyla" means grave. I suppose it's like the English last name "Graves". But in this particular instance it's pretty insane and sinister.
BTW the movie was very disappointing and disturbing not for the story but for the director's pov or lack of it thereof and for the upbeat tone of something insanely sick and brutal and disturbing. Read Manohla Dargis' review in the NY Times, she hits the nail on the head.