Naturalist Casey Anderson and actress Missy Pyle share their wedding day with 800-pound Brutus, who served as Anderson's best man, Sept. 12, 2008. The National Geographic Channel has produced "Expedition Grizzly," a documentary about Anderson and his companionship with Brutus, who he raised since birth, and a look at the lives of Yellowstone's vulnerable grizzlies. (Courtesy Grizzly Creek Films and National Geographic Channel www.natgeotv.com/grizzly)