Stephen Downes had a post about Calameo, so I knew I had to give it a shot. I tried it with a couple different documents that I had lying aorund, and it didn't do much for me. Then I tried it with an old presentation that I had on Slideshare. I converted it using Calameo, and this is what I got.
While it isn't spectacularly different, I like the page-turning more than the arrow-clicking of a regular presentation. I think I will be playing around with this some more.