My distant recollection of Dark Sun has always been thri-kreen, psionics, and lot of sand. I wouldn't exactly say I'm a fan of it like I'm a fan of Eberron or even Planescape, but I am a huge fan of the concept: a post-apocalyptic world combined with a non-standard fantasy setting. Magic drains life, so everyone and thing relies on psionics. There aren't any gods, so you can count the clerics out. Coins come in ceramic and weapons come in one of many flavors of bone or stone. One of the standard races is an intelligent, many-armed, bipedal insect. It's like, a fucking magical, medieval Mad Max.
Finally, there's also a couple pages devoted to Athasian magic items.
My Girlfriend is a DM posted up part 1 of their own Dark Sun review, so go read it, too.