Muscular Dystrophy. While playing Evony, a Facebook MMO, in his living room, Chambers noticed the smoke but was powerless to put it out, get to the phone or flee the house.
So instead, Chambers asked his fellow Evony players for help, who in turn called the police and fire department to save the man. Initially, the 911 dispatcher wasn't sure whether the call was a joke or not, but he contacted the proper authorities anyway. The fire was quickly put out and Chambers kept from harm.
Chambers' wife used to dislike Evony, but now she has a different perspective on her husband's hobby: "I hated this game because he doesn't pay attention to me or anything else in the house. Now I've got to bite my tongue because it saved his life quite possibly."