Early JG Ballard is worth reading, especially The Drought and The Drowned World. I quite enjoyed Douglas Coupland's playful take on the millennial novel, Girlfriend In a Coma (a writer I'm not all that keen on usually.) Very much influenced by McCarthy, Alden Bell's recent zombie novel The Reapers Are the Angels is one I can't recommend enough.
There's a big market for so-called "Rapture" fiction in the US right now, exemplified by Tim LaHaye and Jerry B. Jenkins's Left Behind series. The books sound rubbish, but there's something about writers doing such a trashy take on Christian eschatology that makes me think they could be quite fun. I mean, in the series mentioned, the Antichrist is a Romanian Secretary-General of the UN, who was conceived through a combination of genetic engineering and IVF (those twin evils!), whose sidekick is able to dispatch non-followers with lightening bolts. Doesn't that sound great?!