Re: the boring man. I think that part of the Khan Academy's popularity stems from the guy's voice and the way he speaks. He has a nice voice and he changes his tone when he lectures, which makes him easier to follow.
LOL
I cannot recall any of my math profs or upper level/grad classes being boring. In fact, they were the funnest classes and teachers I had. Only a couple of profs in the history and Greek departments even came close.
In some of the classes we'd get to arguing over a particular problem and it would go on for the whole class. Heaven help you if you got picked to do a problem and were not prepared. You got to really see how visual vs sequential learners dealt with different classes of problems.
One of the things I took from math to other courses was the need to completely memorize certain things.
