Washington Post has some great graphics, panoramas.

http://www.washingtonpost.com/wp-srv/photo/katrinapanos/index.htm
http://www.washingtonpost.com/wp-srv/photo/ritapanos/power.htm
http://www.washingtonpost.com/wp-dyn/content/panorama/2005/09/29/PA2005092902075.html
http://www.washingtonpost.com/wp-dyn/content/custom/2005/09/23/CU2005092301101.html

Proof of the size and destructiveness of these two storms. The aerial panoramas are particularly difficult to look at. The devastation is truly beyond words.