I recently rented Eastern Promises with Viggo Mortensen and Naomi Watts (directed by David Cronenberg)--really well done. Great acting and filmmaking. I don't like graphic violence, so I had to look away during a couple of scenes since it looks realistic. The bonus features on the DVD talk about the history of the Russian Mafia in London and meanings of their tattoos. Viggo Mortensen says he lived with mafiosa in north-eastern Russia for a month to prepare for the role and research the tattoos. I would recommend this movie for sure.