There's an invention called a GigaPan Epic Pro. I'm just getting started with it and I have a bit to learn, but the first set of results are pretty cool. It's a mechanical "sling" that holds your camera and pans horizontally and vertically, and fires the shutter each time it stops. I just took 168 shots with my D7000 and stitched them together with the provided software. Then I uploaded it to their web site. You can look at it or zoom in anywhere.
This is just a snapshot of a partial zoom, but the full size panorama is here:http://gigapan.com/gigapans/123534
The focus is a little soft because of the setup I used and the fact that the focus was locked. There's a way to make it refocus with each shot, but I'm still learning. Also, the stitching was really good, but when I re-opened the file, there was a bad band where everything's misaligned. It's probably a mistake I made.
So... don't judge the quality from my one first effort. Just realize that there's a SUPER cool device that helps you shoot and stitch panoramas that are HUGE. This one is 1068 Megapixels!!! Wow!