I just watched TBTB III last night again. Great video. Here's links to the documentary and TBTB I and III (not sure where II is). I bought and downloaded TBTB III somewhere, but don't remember where. I am sure someone might have better ideas as to where to buy the TBTB series possibly as a package or download.
When most of this isn't sold anymore, wouldn't it be possible to upload them on YouTube (or start selling again)? The current situation isn't good for anybody in my opinion. I would definitely like to watch them all.