Five sci-fi novels that should be considered literary classics

At the B&N Sci-Fi & Fantasy Blog Jeff Somers tagged five science fiction novels that really should be considered literary classics. One title on the list:The Road, by Cormac McCarthy

Bleak and dense, The Road (like much of McCarthy’s writing) resembles a long form poem more than a genre novel. And yet it’s undeniably science fiction, set in an apocalyptic world where most of mankind has died out