I'm obsessed with Horrible Histories. Have you heard of it? It's a BBC show based on the book series, and it's unavailable in the US except as digital downloads (Remember my long-term gripe that stores never sell what I want to buy? I want to buy a Horrible Histories DVD set!), but clips from the shows are pretty widely available on YouTube, where I swear, the girls and I watch them by the hour. I've actually gotten into the habit of hopping on the treadmill when we start watching them--I can't set the speed very high or you can't hear the videos, but I can set the incline VERY high and so still get a good work-out in.
The nice thing about just having the clips, I suppose, is that I can show only the clip that relates to a specific topic, and I can put them in my various homeschool pinboards, and I can put some of my favorites in chronological order for you below: