I'm not a Christian, (I'm pagan) but I love books with a Catholic flavour.
Good Omens-Terry Pratchett
Dogma -Film by Kevin Smith
Constantine -Comic and Movies
Phil Rickman (His character Merrily Watkins is a CofE exorcist!)
Ann Rice's Vampire Chronicles.
Buffy the Vampire Slayer (On my forever fave list!)
Charmed (Yeah I know it's rubbish but I love it too!)
What else might I like?