One of the many things on my Tivo is a show on the History Channel called 'Cities of the Underworld' which takes the host all over the world, or rather under the world, exploring lost cultures and amazing out-of-this-world places.

I just watched an amazing episode about the 'Secret Holy Land' in Ethiopia. Basically the idea is that early isolation of Christianity there caused some astonishing things to happen. I'm talking about Templar crosses on tombs of the Axumite kings 7 centuries before the crusades. Or churches dug into the ground and completely carved out of rock. It's pretty amazing to see.

Anyway, I just wanted to point you to this amazing show. You can go to the show's website and watch full episodes. I really recommend it. It's history lite for sure, but the production quality and unique locations are captivating.