...by The Valacci Papers, I meant The Valachi Papers.
One author you'd HAVE to like would be Christopher Moore.  His book "Lamb: The Gospel According to Biff, Christ's Childhood Pal" is absolutely hilarious.  He's witty and funny as hell yet twisted.  Basically, that book is about the lost/unwritten years of Jesus's life and involves prostitutes, drunk Jesus, how Biff invented the pencil, and soo many other great things.
Also, even though his shit is old, one of my all-time favorite authors forever and ever will be Edgar Allen Poe.  He writes some of the most random, fucked up stuff, and it's all amazing.
Other good reads:
"Ellen Foster" - Kaye Gibbons
"The Chocolate War" - Robert Corrier
"The Odessa File" - Frederick Forsyth