Last year I shared a list featuring the best documentaries of all time; http://wondreal.blogspot.be/2016/02/in-memory-of-merrin-education-in-p2p.html . If you take a look you might notice that Horizon episodes are very well represented. Just what exactly is Horizon? Oh, only one of the longest running shows ever. The first episode, "The World of Buckminster Fuller", was aired in 1964 and now, 50 years later, they are still going strong! If you ever have 50 minutes to kill, just type BBC horizon into youtube and before you know it you'll be wading knee deep through delicious investigative science reporting.
"The aim of Horizon is to provide a platform from which some of the world's greatest scientists and philosophers can communicate their curiosity, observations and reflections, and infuse into our common knowledge their changing views of the universe."