Fun, little projects like the bridge I posted earlier today are going to change the way I take photos from now on. In addition to looking for beautiful, natural scenes, I'll be looking for any scene with interesting structure and some amount of color. So long as those two exist, you have a chance to create something interesting with Photoshop.
The Magic Wand tool allows you to use the structure of the photo to grab interesting geometric components and the Adjust Hue and Saturation allows you change the color palette of those structures, provided they are not somewhere in the grays. A final wash with an artistic tool such as the Watercolor Filter and you've got an odd, wacky-looking image.
It opens up a much larger percentage of the world around me as candidates for photography. Yay!