I'm using the AF360FGZ flash. It has a wireless flash option. I used it a lot actually, along with my *istD Quite a good feature. Sometimes you just need to raise the flash up in the air and take a shot. You can also set the metering with either the external flash alone or with both the built-in flash+external flash (wirelessly). Kinda cool, hah
Let me know if you wanna take a look at it, we can go outing together some weekends.