Musical Artists:
Tom Waits (after owning about 20 of his albums and a tattoo... i could say just Waits albums can get me through just about anything)
That or anything by Dead Can Dance or Lisa Gerrard.
I could also stand Depeche Mode, The Cure, Bauhaus, Alien Sex Fiend, a little Christian Death, Peter Ulrich, Corvus Corax, NIN, older (80's) Skinny Puppy, Zombina And The Skeletones, Pink Floyd, Joy Division, Anti-Nowhere League, The Cramps, The Clash, Misfits etc...
Movies? Hmm...
Bearskin, The Evil Dead trilogy, The Rules Of Attraction, Naked Lunch, Trainspotting, Kevin Smith movies and porno... Any and all zombie flicks.
If i could bring a book, anything H.P Lovecraft.