Hmmm Has anyone tried The Great Courses? I went to their site and DH and I just want to buy every DVD on there. Maybe we could justify them as a "homeschooling expense."

Yes! Aren't they fabulous? We have watched quite a few by now, and have an embarrassing number stacked waiting to be watched (we watch a lot more in the winter, and I splurged at the end of last winter). The only one we have that I'd vote a definite "avoid" is the high school chemistry one - it starts from the premise that you hate math and are scared of it and need to be dragged through an exam. Whilst it might well be good if that's the case, it bemused my chemistry-and-maths-mad 5yo...
Really memorably good ones:
- the particle physics one, a tour of the microcosmos or something like that. We all watched this beginning to end, including DS-then-6. Only caveat is that there is no maths, and if you would have been happy with it, you'll miss it.
- the Bob Brier history of ancient Egypt. He's a natural story-teller. Long though!
Things we've enjoyed:
- Joy of Mathematics
- Mathematics of the Visual World
- Meteorology, the wonders of the weather - have yet to finish this though, as you really need to concentrate!
Things that have only just been started:
- From Yao to Mao, history of China; I've watched the first couple of episodes, which were promising
- Calculus; despite liking the lecturer from other things, I'm not yet totally convinced, on the basis of the first couple of lectures
On the shelf waiting to be watched I have the history of maths one, the integrated history of Greece and Rome, empires before Alexander, and a couple of the geology/earth sciences ones.
If anyone's watched any of the medieval European history ones, I'd particularly appreciate reports on them.