Many of the web projects we do have tons of images that require manipulation and processing. Although the GIMP and Adobe Photoshop are extremely powerful tools, they require a user. That would you be you, sitting in your chair, operating on images by hand with your mouse, stylus, and keyboard. You can do amazing things, but a lot of times you’re just processing over and over and over. When you want to speed things up and move on to more interesting tasks, you will turn to ImageMagick, a set of command line utilities for processing images en masse.
A nice effect that I enjoy is the "snapshotization" of digital photos. Take a look.

Parameters I wish to adjust:
- Rotation (arbitrary)
- Border width and color
- Shadow depth, transparency.
- Background color