What other projects could you do that use photoshop in a manner different than usual?

The example of taking an attractive girl and creating her into a horrific beast beast just shows the possibilities of photoshop. Taking from the example, if you are able to create a large alter on someones face, then why not do it to a whole environment. I'm pretty sure with the editing that photoshop offers that you would be able to create a nice preschool environment into a demonic playground. Thats not only a way to put a fun twist on photoshop editing, you could also create images of people that are repulsive or even funny. It all depends on you and your creativity in photoshop, you are not chained down into only making things look good with photoshop like the rest of the world does.