I was recently looking around on istock for some new illustration designs and came across this artist http://www.istockphoto.com/user_view.php?id=4419273
http://www.istockphoto.com/stock-illustration-16339118-human-vs-machine.php?st=7850843
I really like her use of contemporary shapes and modern themes, looking at using it in my up and coming project.
Also some cool robots
http://www.istockphoto.com/stock-illustration-9413057-robot-set.php?st=461f5bf