I believe there's another one, (I didn't notice anything familiar in the news article with the documentary that I saw before), that I watched on Netflix. It's also on youtube
HERE. This documentary was actually shot, if memory serves me correctly, by a British or Australian Muslim Reporter. He spent 2 weeks with some terrorists in Kandahar and Baghlan in northern Afghanistan attacking that main supply road that goes through there.
This documentary also shows them attacking some US/Nato convoys and one botched attempt with some IEDs.