The Imposter. That plot twist ending is masterful.

Planet Earth was great. My first Blu-Ray. I really liked Trinity And Beyond. Even though it's old, it's still totally historically accurate. My fave might be a multi-part doc called The World at War. I REALLY need to find out if I can buy it. Saw it on TV about 10 years ago, and have ultra-LQ links to it in my bookmarks. There is another I saw, pertaining to our ability to circumvent an asteroid or comet strike. I loved it. But cannot find evidence of it's existence online. There are many others, but that's all I can remember atm.

-edit. The Gasland docs were awesome. I almost cried.

Ahaha I gotta say, Zeitgeist came to mind for me too, even if I'm not sure what to think of it's messages =p was an enjoyable watch though for sure.

My current favorite would be "Life in a Day".

They are working on a sequel, or had at least planned on one but I have not been able to find any new informaiton n it.

Poisoner's Handbook (About the introduction of Forensic science into the US justice system.)
HH Holmes

"Exit Through the Gift Shop" is really that good

World War II: The Complete History (13 ep. / ca. 50min)

https://www.youtube.com/watch?v=EiIQhElR4y8

I have a few:

Chefs table season 1&2
Sour Grapes
The birth of Sake
Skyladder
Hip hop evolution
Planet Earth

Michael Moore's Roger & Me is one of my favourites. It probably should've reversed my respect for GM, but it's probably why I always buy GM cars lol.

koyaanisqatsi