Medical Imaging, wow, check out this 3D image
First, you might get a firewall warning when you hit this link, it is Microsoft Research, so you will need to choose whether or not you get to see this.,
Check some of this really cool images, especially the 3D CT:
If you are into machine learning or biology, this is an awesome read and shows what computer science can do to improve the world about us. This is great if you think that Computer Science stuff can only be used for game design! Ok, this would make for a very interesting game come to think of it.