Mickael Therer emailed links to some cool and dizzying work on his web site, www.360days.com, which he describes as "my sandbox where I explore the possibilities of stitching full spherical images" using Quicktime. It's worth a spin.
These are relatively straight forward as far as context etc, but I wanted to comment on these because I think they're amazing. Although they can get a little disorienting if you spin them too quickly. I've seen this done in some video games, etc but it was always a controlled motion that was always just far too slow! These are great and give the images an added depth and make the viewer feel a bit like a pioneer. You can always look closer and in a different spot and it took me a few images into the site to realize you can go up and down as well! That was exciting.