Pretty good, wish this wasn't a bonus DVD content but instead something like a Tutorial in a seperate Blizzard Mod YT Channel. Knew most of this though, since I dabbled in this thing ever since we discovered it on the WoL DVD. Sadly it's not really flexible enough without custom animations to be interesting to me. Might make something small for a friends map as a intro though.
It would help if we could manipulate bones similar to 3ds max / maya in the cinematic editor.