AcademicEarth.org is a non-profit compiling free online courses (MIT, Yale, etc).

I've started two and think both are very good:

Yale, History of the US civil war with prof. David W. Blight

and

MIT, Physics: Classical Mechanics with prof. Walter Lewin

That looks very interesting. Thanks for sharing

I would suggest Shiller's Financial Markets lectures, I'm checking them out right now and they seem extremely interesting. Shiller's a good lecturer and clearly knows his stuff.

Also, if you're at the intro to physics level, you should really check out Shankar's physics lectures - I had Shankar several years ago and his classes (and books, for that matter) were excellent, he's a real fun teacher to have (though I can't specifically vouch for these lectures, as I haven't seen them).

Cool! Thanks!