Online College Courses. Online College Courses has created a list of 100 useful YouTube channels for teachers. Most of the usual suspects like TED, PBS, and National Geographic are on the list, but there are quite a few that I hadn't seen before such as Garland Science, Witness, and Craft. 100 Incredibly Useful YouTube Channels for Teachers is divided into four parts; general education, science & math, history & world issues, visual & performing arts.
Applications for Education
If you're fortunate enough to be able to access YouTube in your classroom, 100 Incredibly Useful YouTube Channels for Teachers could be a good place to find video content to complement your instruction.
Here are some related items that may be of interest to you:
3 Ways to Access Khan Academy Without YouTube
47 Alternatives to Using YouTube in the Classroom