The Botany of Desire (about how plants change to make themselves more desired by humans and thus get planted more, Apples, Marijuana, lilies, and something else... It's a PBS Doc and free, just google.
My Life as a Turkey (another free PBS (google it) about a man who quit his job and raised a group of turkeys, sounds lame but it's a good one to smoke and relax to)
Youtube:
Breaking the Tabbo, (Marijuana Doc narrated by Morgan Freeman, came out dec 6th 2012.
http://www.youtube.com/watch?v=8UtNF-Le2L0We are Legion, story about hactavists/Anonymous
http://www.youtube.com/watch?v=-aWLu58Y1UWe The Tiny House People, Living in very small houses.
http://www.youtube.com/watch?v=lDcVrVA4bSQGarbage Warrior, about building Eco friendly and self sustaining homes in New Mexico
http://i2.ytimg.com/vi/MI-af61s2r8/mqdefault.jpgI Know What I Saw, UFO doc
http://www.youtube.com/watch?v=PIeGeE0uDJgThrive: What on Earth Will it Take? Doc about all of what you listed. From Crop circles to NWO to aliens to Free energy. An interesting watch.
http://www.youtube.com/watch?v=lEV5AFFcZ-sAncient Discoveries - The Antikythera Machine
http://www.youtube.com/watch?v=-KO4-zx9buc
About a 2,00 year old computer that was used to predict astronomical alignments and eclipses.
Sidenote: The Bosnian Pyramids are fake and just large hills.
Check out Operation Northwoods for Conspiracy, or Operation Midnight Climax.
Gobekli Tepe is the now the oldest recognized Civilization, but you probably already know.
Terry Pratchett, Choosing to Die. About a famous writer with Alzheimer, pondering death after he can no longer remember enough to write.
http://www.youtube.com/watch?v=slZnfC-V1SYI have tons more but I'm at work and can't really search around at the moment.
Lmk if you are interested in any and I'll see what similar things I can think of.