Everyone has their own favourite doco kit - and of course it depends a lot of what you are trying to achieve. But for many scenarios I think you can't look past the Canon C300 or the newer Canon C300 Mark ii - affordable, reliable and renowned their picture quality.
I recently shot some pickups with a C300 using a nice old 58mm Helios lens - adding to a vintage feeling in the shots. I have to say though I really noticed the lack of in-lens image stablization when I took the camera off the tripod (compared with say a Canon 24-105).
I liked this article about Vice magazines approach to kit for shooting news around the world.
What's your favourite doco kit?