• Corel Draw Want to sketch, draw, paint, etc? In addition to an assortment of 'digital brushes' including chalks, charcoals, and pencils, offers the usual array of image-editing tools: crop, gradient-fill, transparency, layers, and so on. It also supports (and, in fact, recommends) tablet PCs for a more realistic drawing/painting feel.
I also have to include a shout-out to longtime favorite, which is great for viewing images, making quick edits, and changing formats. Any free graphics apps you'd like to recommend? Hit the Comments and discuss your faves.