wireless programming

Has anyone had any success doing wireless programming of 328 chips [UNO, Duemilanove] using XBee radios? I've tried some of the methods described on the adafruit and other sites with no success.

I do realize there are specific hardware systems you can buy [eg, wixel maybe, etc] for doing this, but would like to do it with standard radios, like XBee or maybe even BT.