Stupid books that you like

What are some books that have little to no literary value, that you have enjoyed reading?

Harry Potter. >.< I had to know who snape was and why he killed the dumbledor ok?!? ...Now I'm one of those Snape fan-girly things that haunt the dark corners of AdultFanFiction.net

Also there's a book, I can't remeber the title, (and I lent it to someone who never returned it >.<) which, starting in ancient Egypt and moving up to 1995, catalogs perverted historical texts, rumors, and mythology. (The story of how Egyptian goddess Isis got pregnant by having sex with the corpse of her husband, Anything involving greek gods, the homo-sexual tendencies of Julius Ceasar, King Henry the 8th's wives, pages from records of witch-trials where people describe having sex with satan, J. Edgar Hoover, etc)