I like watching online lectures. I watch them as a background while web-surfing. I watch them when i need to learn something fast and certain. I watch them when i have nothing else to do. And I urge you to do the same.
In this post (which i hope will start the series) i will leave several video lectures from Yale Online Courses that i find of particular interest. Titles are self-explanatory so i will hold myself off commenting any further.