Post-Processing photographs in Photoshop is all about experimenting and finding what appeals to you. JHP have made a several concise sets of Photoshop Actions for you to fuel that creativity and save time when working to a deadline.
JHP Photoshop Actions - Review
This photo manipulation is called a stereographic projection, which takes a standard photograph and stretches it around in a circle creating a Globe or Planet like image!
Planet Photo Manipulation in GIMP