Here’s a great video by Terry White demonstrating the new Adobe Photoshop Touch app for iPad and Android devices.  It really is Photoshop — though not with complete functionality, of course.  But if you are a Photoshop user, you will be happy to see layers, blending modes, refine edge, and more. I love how you can start a project on the iPad, then upload it to the Cloud and immediately access it from Photoshop on your desktop computer to finish it.

If you are not a Photoshop user, I suspect you will face a bit of Photoshop’s learning curve.  Unfortunately I haven’t had a chance to try it myself to see how much.  If you have experience with the app, leave a comment!
 

Thank you to Andrew Kavanaugh for the tip!