[cven714]

I discovered a few years back that chess instructional videos knock me out immediately. I used to play competitively and am genuinely interested, but have never, not even once, survived an entire 20-30min video--usually Alex Yermolinsky and his fantastic accent in the "Every Russian Schoolboy Knows" series on the internet chess club.

[dignati]

The "chessnetwork" channel on YouTube is absolutely great. Interesting narrative and soothing voice.

[kaitai]

Math lectures from Russian mathematicians also work (unfortunately well in a lecture room, too).