Hidden Video Courses in Math, Science and Engineering
Pete Skomoroch complied this list of video lectures, some of which are not easy to find. Including lectures by Knuth on the internals of TeX.
A number of the CS lectures are on topic relevant to topic maps.
The holiday season is coming on and you won’t be able to stay at your keyboard/terminal with relatives in the house.
You can always listen to a CS/Math lecture or two on your cellphone.
Your distracted state will convince everyone that you are really concentrating on the game on TV. 😉