“Liquid Resize is a “content aware” image resizing application for Mac OS X and Windows. Liquid Resize is now available for download as a Product Preview from onOne Software. Liquid Resize will allow you to resize an image without traditional geometric limitations while minimizing any distortion that would typically result from changing the original aspect ratio of an image.”
OnOne Software

It’s only a Product Preview (I think that means Beta), but this is pretty nifty tech. It was only a few months ago that I first saw this idea online.