The GIMP is a freaking awesome little program which all you people who are pirating Photoshop should give it up for! There's nothing virtually nothing you can do in an expensive program that you can't do in this one, and it's legally free. Go try it out (and don't bitch about the learning curve, it's sure as hell no harder than Photoshop!) XP
GIMP works for most of what I have to do, which is not much. Mostly just adjusting colors, cropping images, and occasionally adding or removing something from an image. The only thing I really miss from Photoshop is the chrome filter, which I often used to make some neat effects. Most of my work nowadays is done in Inkscape, however, which is way more powerful than Photoshop for vector graphics (I don't know why people are using Photoshop for vector graphics--it's not a vector graphics editor!) and even beats Illustrator in some areas.