Google has posted satellite images of New Orleans on Google Maps. The images where taken on the August 31st. You can switch between before and after satellite images. It is staggering.
Link: http://maps.google.com/maps?q=new+orleans&t=e
The breaches in the levees are clearly visible and the extent of the devastation becomes very real. For some reason I find the satellite images more emotionally engaging than the images on TV. I don't know why. I actually got scared to click 'zoom' one more time.