There were some messages lost in the recent reset. I like this software which stitches and blends multiple images. Beats anything I could ever do manually.
Kolor Autopano
AutoPano Pro - Panorama stitching software - Panoramic photo software - image stitching It's also supposed to do HDR stitching from bracketed shots. I don't do that, so I wouldn't know. Really cool demo on the site.
Here's one I shot during a lunch break and then rendered. I'm leaving out the details until a few people get to see the photo and possibly comment on what they think.
Shot with a G6 and I left the railing because it's fun. I wouldn't expect anything could blend 180 degrees like this with objects 1 foot away to the clouds. I'm the shadow of a person standing at the top of the grandstand.
Websize version above, the original is 13.5MB and 11310 x 5037.