How do I make an object slowly rotate 360 degrees?

I think the same can be accomplished with Krpano. You see that on this examples all images are preloaded. Shifting rows can be also implemented. Don't know if anybody has already done that. Let's see other responses. Steps (smoothing) is most probably just a feeling if you are waiting image to load from preview to full image and depends also on number of images (angle) taken to make 360 circle.