I'm still obsessed with Artbreeder.com.
Look at these amazing images, all of them created by a computer. A few years ago you had to be a programmer to get these, now, Artbreeder makes this powerful creative tool available to all.
Here are some of my favorites:
If you've ever wanted to mate two images together, then this site is for you! Most of these images were mated lots of times to get these outcomes.