If you've ever wished that YouTube was more serious, or in-depth, or intellectual, then here's a treat for you. A web site from which you can want thousands (6301 to be precise) full-length documentary programmes on everything from money to health to music to sexuality.
The titles are fully searchable, and you need nothing more than a web browser in order to view all of the content. The site is free to use, and the content is mostly taken from freely available postings on the web sites of broadcasters and other companies. So, according to the site's FAQ, there's no problem with copyright.
Check out www.watchdocumentary.com for a fact-packed browsing session at your PC.