Video Sites for Learning
While YouTube is great for entertaining videos, you have to dig pretty deep to find educational stuff (or know what you're looking for). Below is a short list of educational video sites:
Academic Earth - Selected lectures from top professors at Berkeley, Harvard, MIT, Princeton, Stanford, and Yale. Subjects range from Astronomy to Religion.
TED - "Inspired talks by the world's leading thinkers and doers"
While we're at it, here are two more cool links: