The Khan Academy has one mission: To provide high quality education to anyone, anywhere. Through the use of technology, The Khan Academy hopes to foster new ways of learning.
For their first endeavor they recently posted to You Tube, over 800 tutorial videos that cover topics from Physics, Calculus, Chemistry, Finance, the Bailout and others. You can view the entire list at their website. They also have a You Tube Channel that you can subscribe to.
While most videos are helpful or high school or college prep students, there is a great collection of Brain Teaser videos. Below is one of my favorites.
So head on over to the Khan Academy site or their You Tube Channel and learn something new today!