My Take
It provides simple, short videos that can be used to introduce a new concept at the beginning of a unit Or give a little background information to establish a context for a discussion. There are videos/lessons for different content areas as well as academic levels. Sometimes it seems a little juvenile (I teach in a Middle School) but the kids think Tim and Moby, the narrators/teachers/guides, are funny. It is accessible for all and provides basic entry points.
How I Use It
I use it to introduce new ideas or provide background information which may be relevant to a group discussion or task. I have also used it to give some background on people through the bio videos so kids can learn some basic information about the people in the world they often hear about but may not know why.