A couple of days back, I saw an paper on Context Aware Image Resizing by Dr. Ariel Shamir and Dr. Shai Avidan. The concept seemed interesting, and the demonstration video showed some example of how effective context aware image resizing can get. There were people asking for it as a feature in Photoshop.
The script gets a little slow if given a lot of images, and I am looking at way to increase the speed. Watch out for live example that I will post later.