Loved the interview, but I hope that the DVD she's referring to it's not the EPIX one!
There could be a version with backstage footage, or a similar kind of addition, that would be nice! I'm glad though that there's the concert only sound in the Epix one, I listen to it without even watching it, Katy's voice is so amazing in it!!
Two movies Katy mentions in this interview, Mommy Dearest and Paris Is Burning, I don't know yet. Found them, I must watch!!