I think I'm prone to cascading realization more than most. I often watch (or read) things multiple times, each time seeing it in a new way. For me, it's not so much the process of getting a principle intellectually, but a long process of internalization, often of simple ideas, and putting them into practice in my everyday work. The colloquial term for this is 'stupid', I think, but I prefer to think of it in a more positive light. =) It actually makes me think of my favorite T.S. Eliot quote:

'We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.'

I often return to basics and understand them in a new way after some time away, and Rich's talks evoke that phenomenon for me more than most.