iTouch, Brushes 2.1, ArtCamera, DXP, Pogo Stylus.
I used DXP Free to combine two images. One was a photo of an almond orchard altered with ArtCamera and the other was a sunset landscape I painted in Brushes.
This one appeals to me for two reasons. First, it surprised me. I love it when by "happy accident" a medium delivers a result that's better than I could produce by design. And second, it's an example of the whole being greater than the sum of the parts. The combination transcends the separate images.