My dad and my older brother just came back from Arviat, where they were polar bear hunting. My dad had the tag, my brother was there to do the filming. My dad took a 9'3" bear on the third day of their hunt. Live weight was estimated to be somewhere in the 800-900 pound range. Skull was 26", one inch short of Boone and Crockett.
There are some pictures at
http://community.webshots.com/user/notorious_vee
Click on Scott's Polar Bear.