I have been using streaming videos for a long time; there are so many options, you can find a video about just anything you want; I have used YouTube and Hulu before. I like showing my students videos related to the theme we are studying. This time I chose TeacherTube and was very pleased with it. I found a nice video about fire safety that is very adequate for Pre-k students:
I also found a video in Spanish about the butterfly cycle with I know I will use; I always have caterpillars in my classroom and my kids love learning about them.