I bought my Sigma 8mm f/4 EX Fisheye lens a couple of months ago (about 5 or 6) to dabble in some panoramas but ran into some bad luck (mainly the fact that my tripod was stolen from my car 
). When things finally settled down I was the new owner of a Feisol carbon fiber tripod with giottos 3-way pan head (not baller enough for a ball head yet!)
It took me a couple weeks to talk myself into purchasing a carbon-fiber tripod. I've gotten over that whole impulse buying thing, thankfully, but by the time I splurged on a new tripod I was deep into Spring quarter and Thermodynamics. So I put panoramas on hold and gave the 8mm some regular usage and I liked it a lot, but the time for Panos has returned! 
I shot a wedding on the 25th and gave shooting panos a whirl. The basic gist of it is I'm using my 20D w/ 8mm fisheye in portrait mode which gives me ~170 degrees up and down and about 67 degrees left to right, so I form the cylinder by rotating the camera around the nodal point (phiosaurus pano head! lol) and then cap it off with an up and down shot, which I forgot all about. I blame it on all that time off, I swear!
Anyway, I constructed the panoramas using PTGui and put the quicktime files together using a program called PanoCube Plus.
I'll probably go a little more in depth with making panoramas in a video tutorial or article or something later, after I get better at it. 
Regular Pano
360-180 pano
It's a small world after all.
awesome!