"The Light Bulb Conspiracy" Excellent documentary on planned obsolescence and consumerism. Find one with English subtitles, as some of the interviews are in foreign languages.

"The Century of Self" Excellent documentary on nasty guy: Edward Bernays. Covers the creation of marketing and the rise of propaganda in the west.

"The Internet's Own Boy" A through exploration of the life and death of Aaron Swartz.

"The Secret of Oz" An interesting story of the history of the federal reserve, monetary policy, and media symbolism.

"Zero Days" Gets an honorable mention, because the politics of sate-sponsored cyber warfare are cool as shit.

Michael Moore? is Red Pill Material?

Never heard of Unacknowledged before, but Steven Greer is a gate-keeping shill.

Here's a few of mine. YMMV.

All Wars are Banker's Wars

The Money Masters <- long but good.

Zeitgeist <- this one has religious stuff as well, take as you will.

Adam Curtis' stuff. Especially The Century of the Self

conspiracy of silence.
it goes over all the fucked up pedo-shit our leaders did/do surrounding the Franklin Cover-ups.
not really for the faint of heart though

I like Spin.

"JFK to 911" is a pretty good one.

The Greatest Story Never Told.