Anything cool one can do with this? I have my MRI + DTI and wonder what to do with it.

Mine looks like any brain to me (no tumors, yay!).

From the DTI I was able to calculate the white matter trajectory with slicer: http://screencast.com/t/yDYFJdL7D

(I was a little let down I couldn't follow the visual nerves, but as they cross there is no clear direction of diffusion that could be imaged I guess...)