How can I create "round" panoramic pictures?

Question

My question is, how can I make them round like in these pictures:

http://englishrussia.com/?p=1649#more-1649

If it's with photoshop how can I go about doing it?

Answer 1

Using photoshop
*Choose a panoramic type photo (it's best if colors on each end are a close match
*Go to Image>Image Size (unclick constrains proportions and make the height pixels the same size as the width pixels)
*Go to Image>Rotate Canvas>180
*Go to filter>Distort>Polar coordinates making sure "Rectangular to Polar" is checked
*Use clone and smudge to blend the seams.

Answer 2

That's a tough one... it would probably take quite a bit of messing around with but it seems possible. I'm guessing you'd just have to distort the images into a circular format and then stitch them together. Sorry I can't get into detail but I haven't ever tried it. Seems like kind of a lot of work though.
Oh but I did find a similar tutorial... check it out!
http://www.photojojo.com/content/tutorials/create-your-own-panorama-planets/

This is also a really good one (just click the image):
http://suckup.deviantart.com/art/How-to-capture-little-planets-31978224