If you are looking to have a little fun with your digital photos, a really awesome application to play with is Photosynth.

Imagine being able to share the places and things you love using the cinematic quality of a movie, the control of a video game, and the mind-blowing detail of the real world. With nothing more than a bunch of photos, Photosynth creates an amazing new experience.

Basically, Photosynth combines a bunch of pictures from different viewpoints of the same object to create a rotating and 3D style effect. There is a video on their site which gives you a walk through of how to do everything and offers suggestions on ways to make good synths.

This is some pretty powerful stuff, so it is worth a look if you are into digital photography.