The World at War
Best Worst Movie

Shoah

It's a tie for me, between 'Live Forever' and 'Pearl Jam: Twenty'. Both, incredible music docs.

Darwin's Nightmare
Inside Job
The Yes Men
Our Daily Bread
Jesus Camp
Fog of War
...

Cocaine cowboys 1 + 2

Any food documentaries

Anything to do with animals

if your watching something like "jesus camp" or "the union" or "this film is not yet rated" someone needs to punch you in the face and shut you the fuck up.
you just got sold a bunch of fucking lies.
"there were experts and politicians"
stfu "experts" also said the easter island moai were set by aliens
"there were interviews with christians and they were dumb."
stfu its called a straw man fallacy
"there were all these facts and figures."
stfu and read the whole report your getting sold pieces of. its probably online or at your community college library.
"they actually quoted this politician saying this corrupt thing."
just stfu

spoiler alert, weed's addictive, "legalize it" is bad for the economy, christians are just people with a way of life you dont understand, statistics can say whatever you want them to, noone owes you a fucking thing and politicians lie

So good.

I don't recall saying any of the films I mentioned were without bias. Most (if not all) documentaries have an agenda they're trying to sell you. The only ones really immune to this are ones on nature (i.e. "We followed a pack of gorillas around for six months").