Hi Linda: Nothing wrong with YouTube (except students watching that instead of listening to you). Variety in media selection is one of less seemly but more important teacher responsibilities. It's here that you are deciding what is the best way for me to convey the necessary material in the most time efficient and interesting manner. So taking time and putting thought into this responsibility can pay dividends in the end when assessng student performance, as much will have to do with the media selctions made prior to the class. Regards, Barry