In reply to Jon Stewart:
Loved Sour Grapes. The guy was clearly talented and shows up the "high wine" world as at least 50% guff.
The Act of Killing. Former Indonesian anti-communist death squad members are asked to recreate scenes of their killings but filmed in different genre styles ('50s gangster, musical etc.) in an attempt to get them to confront the reality of what they'd done. Bonkers concept but effecting in the extreme.
Dear Zachary. Filmmaker makes tribute to his murdered friend for his young son, but the custody battle during his filmmaking overtakes the original idea behind the film. Devastating but beautiful.
Vietnam. Ten part documentary (still on iPlayer I think) with interviews from all sides of the war (north and south Vietnamese, American GIs, politicians, anti-war protesters and Vietnamese civilians). Basically a history of occupation of Vietnam since the French and a condemnation of corrupt politics West and East. Brilliant.
Jim and Andy. Jim Carrey's performance as Andy Kaufman in Man on the Moon was filmed extensively behind the scenes. Carrey insisted on being in character 100% of the time and wouldn't answer to Jim, only Andy. Nuts but enjoyable, whether you like Carrey or Kaufman.