Billy, I just bought this lens before I went to Japan:

http://www.amazon.com/NIKON-14MM-Ult...5397068&sr=8-1

Here are a couple example shots with this lens on my D80:







Its a wonderfull lens, but a bit on the high side. I'm still not done paying for that puppy. My next lens will be a true fisheye, probably this one:

http://www.amazon.com/Nikon-10-5mm-2...5397081&sr=1-1

There are also some nice options from Sigma and Tokina but for roughly the same price, I stick with Nikkor. F2.8 will give you a lot of flexibility in low light conditions, which for me, is important.

HTH,

Bart