Some choice picks from recent times.

BBC - BBC Two Programmes - Louis Theroux, Ultra Zionists - Self-explanatory
BBC - BBC One Programmes - Human Planet - A 6-part docu about human's relationship with nature
Zeitgeist: Moving Forward (2011) - IMDb - The 3rd Zeitgeist movie, worth a watch
Senna (2010) - IMDb - A documentary about the alltime greatest F1 driver
NOVA scienceNOW | PBS - A special mention to the new season of Neil DeGrasse Tyson's science show. Watch at least ep. 5, "How smart are animals?"