Learn 360 is a site I just learned about on Facebook from Kymberly Mulford (gotta love your PLN). This is a site that is very similar to Discovery (United) Streaming but a lot cheaper. It offers the same kind of abilities such as streaming/downloading videos, creating digital content, quizzes, etc etc.
I highly recommend checking out their 30 day free Trial to see if 360 can work for you. Click here.