Truffles - handmade in small batches, and so expensive that I can at most afford 4 of them at a time...
http://www.moonstruckchocolate.com or (my favorite)
http://www.vosgeschocolate.com/ Their catalog is what pornography would be if you replaced the concept of "sex" with "consumption of theobroma"
"If it's sweet, but not chocolate, it's not worth the calories it's made of."