Watch PBS, they do a pretty solid job of getting information and presenting sides. And BBC tends to as well although I don't know how much content they have on Netflix.
If those are too biased for you then I don't know what to say.
Here's some that I liked:
BBC's Auschwitz Inside The Nazi State (But, oh no, its biased! )
I Like Killing Flies
Encounters At The End Of The World
Dear Zachary
Let The Fire Burn
Cocaine Cowboys
Big Boys Gone Bananas
The Act Of Killing
Klitschko (about the Urkainian brothers who box)
There's some pretty good ESPN 30 for 30 ones.