I love You Tube and Google Video for personal amusement and for a variety of professional reasons. So often, a quick video is just the greatest instructional tool when you want to convey a complex idea so folks will get the big picture -- why it is they might want to know this info.
In my personal life, I enjoy having access to video of things I would not otherwise have much knowledge of. I recently watched a long presentation by the author of Eat, Pray, Love. Having just read the book, I was curious about her and wanted to see what she looked like and what she had to say. It was a great experience.
I have embedded video in my other blogs.