Salman Khan, the MIT alumnus and founder of Khan Academy, has shared his experience in creating Khan-style videos (KSV) with Anant Agarwal and the edX team through–appropriately enough–a Khan-style video.
The great thing about open educational resources is that we can all learn from them as well.  Pick up tips and hints from one of the recognized innovators in the field:

[youtube http://www.youtube.com/watch?v=Ohu-5sVux28&w=560&h=315]

Salman Khan also delivered a wonderful commencement address at MIT in 2012, which traced his journey from MIT to Khan Academy (and gave a nice nod to MIT OpenCourseWare as a source of inspiration).