Brady Haran's videos are in general very good. All of his videos are in this style, concentrated on a single topic and in general shorter than ten minutes. I es

Brady Haran's videos are in general very good. All of his videos are in this style, concentrated on a single topic and in general shorter than ten minutes. I especially like the SixtySymbols channel (Physics and Astronomy). He seems to have a talent for asking the right questions and/or finding the right people to answer his questions.