There are a lot of documentaries freely available on YouTube.
Sometimes the producers release them for free, but most often other people upload the films and the copyright owners don't bother with taking them down.
xDocumentaries is a central place where you can easily find these documentaries...
Philosophy, 2000, with Alain de Botton, 2 hrs 25 mins
A Channel 4 TV series written and presented by Alain de Botton in which he presents the main ideas of the six philosophers he admires the most, Socrates, Epicurus, Seneca, Montaigne, Schopenhauer, and Nietzsche, how these ideas apply to our modern life and how they might make us happier. The...(show more)