If you're interested in any sort of experiments involving measuring temperatures with an Arduino, you should head over to the KickStarter for the breakout board. The goal is to pre-fund building 1000 of them. Why so many? Because the cost to build them falls dramatically when you purchase a "reel" of 1000 thermocouples. Not only does the price for the parts get cut almost in half, but the cost to have them assembled by machine is much lower as well. Unfortunately, a reel of thermocouples is over $2000 - which I can't afford on my own.
This is a great opportunity to get one for less than half the cost of buying an AD595AQ - the best alternative analog thermocouple amplifier available to breadboard.