Fractals are part of the Etc... in Optical Illusions Etc..., no photoshop used in the creation of the piece below. I love the illusion of infinity that this picture evokes.
The artist explains his piece here:
Traveling from Missouri to Virginia, I stopped for the night at a hotel. I was really bored, so I started experimenting.
This is from the dark ages, by the way.. Sony Mavica floppy disk based camera & a Pentium II 266 laptop.. heh. heh.
So, anyway. I would take a picture of the laptop, swap floppy disks, display the latest photo on the laptop, and take another picture of the laptop, and so on.