Here is a collection of a dozen of the best documentaries I saw in 2012. It's not a "best of the year" list. Just some good memories of these films.I will not burden you again with another complaint about lists. More than ever, I despise them because they shift focus away from a film and toward a list. When I recently caught up with "Django Unchained," for example, I gave it four stars. The comments section was overrun with readers asking if that meant it was now on my Top Ten list. One reader insisted on knowing which title it replaced. Although the piece was some 2,000 words long, another reader insisted he still wanted to see "my official review."