There is a site I've run into a few times over the years, and I'm happy to see it stay relevant. There is a channel on youtube from History teachers in Hawaii who take popular songs and remake them into music videos for unit topics.
When I was subbing, and the students would beg to listen to music, I would open this channel and watch to see how long it took for them to realize it wasn't what they were expecting. I love each video, but one of my favorites is their video for the French Revolution:
Do you see any tie to how you'd use Animoto, or think there is a video they made you find exceptional?