Also, as a side note, "Pet" would especially be good for an unsub with Dissociative Identity Disorder (multiple personalities). I can also imagine one of an unsub who is aware they have DID and doesn't want to kill, but one of their alternate personalities does, to "Woke From Dreaming" by the Delgados.

Oh yeah, "Little Death" by +44 would make a good song in general for the team, I can especially see it being a Reid!song for some reason.

edit: Although listening to it again, I could see it being a GREAT song for Hotch about Foyet and Haley.