Ok, I'll play. I've been working at capturing our local valley in panos. These were taken with a Leica R 180/3.4 APO lens on a 5D. Processed in CS2 with photomerge. Like the others, I shoot RAW and normally vertical, tend to use a longer telephoto, manual focus, manual exposure, manual white band, Sometime use a panohead, some times just my ballhead, sometimes I handhold.
I'll also combine shots for a more traditional rectangular aspect that has great detail. This is 4 images.
Then there is this one I have shared before:
And a link to a larger, although still downsized,image of the above pano:
http://www.pbase.com/jhuddle/image/87408333