“The Spectacular Miseries of Re-Entry” is a quote from Lost In The Cosmos, by Walker Percy. You should read his book The Moviegoer.
Before You is a take on the Fall and the Garden of Eden.
Kids On Fire is based on the documentary Jesus Camp.
Dancing’s Not Divine is all Blood Meridian by Cormac MacCarthy.
Ice-9, obviously has some Cat’s Cradle in it. That’s Kurt Vonnegut.
In Heaven is loosely based around the premise of the C.S.Lewis book, The Great Divorce.
Always Be Leaving is another concept from Lost In The Cosmos.
Christopher Walken contains tidbits of Bill Hicks wisdom.