Of course, the resulting files could be pretty big - some of the ones I made came in at over 4Mb - so they're a bit large to put on this website. But here is a taste of what I used to do.
The file above weighs in at just 211 Kb and it's the reason this page exists: I made it just to prove to myself that it is possible to embed QuickTime panoramas in web pages. It's a panorama of the 2003 South Cotswold Beer Festival and it took me far longer to figure out how to embed the image properly than I spent at the festival! I finally got it to display thanks to a very helpful page on Apple's site that has long since disappeared, but which explained the whole thing. My problems at the time were all down to ActiveX - at the time I needed to allow ActiveX commands to run if I wanted to see the panorama. Now it all seems to happen seamlessly.
The example below is a bit bigger, at 905 kb. I shot it in the mountains above Chatel, in Switzerland.
And I still think this stuff is cool.