Behind the scenes footage can be fun to watch, but the same made up answers to silly questions some feel compelled to include in their releases do nothing for me.
This here is more on the watchable side. You do not have to like where it is from and what you think of the stuff they make.
Feature material often has a commentary track. I encountered terrible Wicked productions with one, for example. It could enrich the lame story and tame scenes in some rare cases.