If you're looking for something a bit meatier than YouTube fare for weekend watching, check out SnagFilms and enjoy documentaries on a wide range of topics.
You'll find all sorts of content on SnagFilms, ranging from well-known documentaries like Super Size Me to lesser-known but interesting works like The Times of Harvey Milk, about the assassination of San Fransisco's first openly gay elected official, and Hell on Wheels, about the origins of modern women-only roller derbies.
The films are almost all full length and of a high quality—no grainy webcam political rants here. Watching the videos is free and requires no login, though there are brief 10-15 second ads sprinkled throughout the videos—one appeared during out test run of Super Size Me every 15 minutes or so.
If you have a favorite place for finding interesting and informative videos or audio, let's hear about it in the comments.