I visited SchoolTube and TeacherTube. The websites both had great videos and would be helpful for my students whether they missed class or needed a review of the lesson. Here are two videos I found useful. The first is about solving multi-step equations and the second demonstrates one way to graph a line.
With regard to the copyright laws, when in doubt, always cite where you got your information from!
I have a Dropbox account which I have shared lesson plans in.