I liked
Secrecy quite a bit; it's pretty clear which way the filmmakers' opinion hews, but they did a good job of including people with a variety of perspectives and giving opposing views fair consideration.
Protocols of Zion is
excellent IMO -- and not what you might think based on the title, alone. The director (Mark Levin) sets out to understand the roots of modern antisemitism, and unlike a lot of other reporting I've seen on the topic, he really gives the subjects of his reporting a chance to speak their minds, no matter how ridiculous their opinions might be, or how offensive and hateful they might be toward Jews, or even toward Levin, personally. His emotional discipline and sense of fair play, especially toward those who would never extend him the same courtesy, is downright impressive.
Heavy Metal in Baghdad is great, too. It really underscores how music cuts across cultural and social divisions, and breaks your heart at the same time. Watching these poor guys just trying to life their lives and do what they love while the chaos of war unfolds all around them... that's some seriously humbling shit.