Brainpop!

I love to use Brainpop for a variety of subjects.  Yes, it is a little pricey but that is what EPAK is for.  A tip given is to get a classroom license and share it with a few other teachers (three computers can be used at any given time).  The videos and questions associated are pretty fun and awesome.  Plus, for my school, I got the Spanish/French add-on and they are respectable, well-done translations/presentations.  Give it a shot!