I love everything about this song. The vocals are perfect, and all the layers of sound do make me want to shake my ass.
I could see/hear it on CSI..
I never took it that he was answering the question of where he was/had disappeared to with the explanation of a big black monster, but rather that this big black monster was taking over his life, and the 'did you hear', is really directed toward himself (he is the monster, but he can't tell the difference]