Do Androids Dream of Electric Sheep (Blade Runner) by Phillip K. Dick
Ender's Game by Orson Scott Card (Also; Ender's Shadow. Xenocide. Speaker for the Dead)
If you like Fantasy and Action together, the R.A. Salvatore's books on Icewind Dale and the Drizzt Do'Urden series are quite good.
EDIT: Seems like someone already took care of Dick, and Palahniuk too.
Fight club is a great place to start and he has many more. My favorite is Survivor. Also Haunted, Lullaby, Choke, Invisible Monsters and Diary. All fantastic. Rant is good too but kindof aping Vonnegut. As long as we're on the subject, ANYTHING by Kurt Vonnegut, Tom Robbins, William S. Boroughs, Hunter S. Thompson, and Herman Hesse will leave you breathless. With Hesse you should probably start off with "Narcissus and Goldmund" or Steppenwolf. For Robbins then "Skinny Legs and All" or Fierce Invalids Home From Hot Climates. For Vonnegut, Galapagos or Slaughterhouse Five. Also Joseph Heller writes some amazingly deep stuff but writes with a very slow and metered pace. Happy reading!