I had always plan on doing some of these, but have yet to do so in Photoshop. I have one set that I shot to make into a panorama from Red Gap Pass in Glacier NP a couple of years ago. Perhaps I should try it now. On the other hand, I just acquired a Sony A55 DSLR that has a built-in panorama function. I have only tried it with one subject, but it looks like it does a good job stitching.