Stephen King and Peter Straub, The Talisman.
James Rollins, Excavation. All his books are worth reading.
Douglas Preston and Lincoln Child, Riptide. The best pirate treasure story I've read.
Joan D. Vinge, Psion and Cat'spaw.
Orson Scott Card, Ender's Game and Ender's Shadow.
Anything by Terry Brooks. He has a few series.
C.J. Cherryh, The Snow Queen series, the Fortress series.
Marc Scott Zicree and Barbara Hambly, Angelfire series.
Markus Zusak, The Book Thief.