Good video on separating eggs
I find the site startcooking.com particularly useful for some quick videos that are narrated clearly, photographed neatly, and generally are better in quality than those found on Youtube.

Here is the video at that site: http://startcooking.com/video/295/Crack-and-Separate-an-Egg

That said, there are many such videos on Youtube that might be useful also:


http://www.youtube.com/watch?v=t-OwbEy-Vxk
http://www.youtube.com/watch?v=yAGX-54iR30
http://www.youtube.com/watch?v=04jY7A1yy_g