I re-read old favorites on a regular basis. Mostly King, though. Most King books I've enjoyed I've read at least twice. I read The Stand about once a year. Non-King favorites I re-read on occasion. I've read The Bonfire of the Vanities 3-4 times and Memoirs of a Geisha twice (and recently thinking about reading it again).

This does cut into my overall reading time to try new books, which perturbs me. But I can't stop!