Ever since the Content-Aware Image Resizing presentation at SIGGRAPH 2007, there has been excitement around finally getting to play with the underlying software. Some developers have gone so far as to implement their own version of the techniques described in the paper by Shai Avidan and Ariel Shamir.
Original (Photo by Chuq Von Rospach)
45% width, 80% height
The plugin is in early stages, so there is currently no way to select areas of importance. That means people sometimes get mangled:
Original (Photo by Boltronic)
Even though they've hired Shai Avidan, Adobe hasn't confirmed that the technique will make its way into Photoshop. However, it will be interesting to see third-party implementations grow and become more optimized.