I love art that takes you to a different world. Don't get me wrong, I love photos or paintings that show life as it is, but I think if you can make the viewer travel to some other world art is much more effective. Because of this, I really enjoy the work of surreal photographers. These type of scenes evoke an array of emotions and often stem thoughts relating to either the image or the feelings it produces. You're left wanting to understand a little more about the story of the subject.
I can't say that I have only one favorite artist. Since my taste is constantly evolving, different photographers inspire me at different points. However, for right now, the work of Robert and Shana Parkeharrison is a great example of the scenes I really love. Their execution is perfect and the imagery is clever, especially in their series entitled "Architect's Brother."

Their content is something I strive for. Cole Rise is another photographer I've enjoyed recently. His color palette is one that I've been emulating recently along with the slight texture to some of his more surreal photos, like in
this photo or
this one.
As far as digital artists/print artists, I really enjoy the work of Scott Hanson aka ISO50. His
website is a great piece of design itself. I tried to make a flash site like his last year, and though I lack the skill at the moment to do half of what he did, I think his influence was obvious.