On Academic Earth there are thousands of video lectures from top scholars. The lectures were recorded in Berkeley, Harvard, MIT, Princeton, Stanford and Yale.
I immersed myself in Paul Bloom’s lectures, the American Novel since 1945 by Amy Hungerford and the Introduction to Ancient Greek History by Donald Kagan.
I love "The Human Brain and Muscular System" by Marian Diamond!
I might even get interested in Physics, Astronomy or Anatomy. ☺