With the Islanders moving to Brooklyn, the Detroit getting the go-ahead on their arena (
http://www.cbc.ca/sports/hockey/nhl/...ankruptcy.html came out today) and the Oilers in the process of trying to get their new arena it was looking like the only arena older than the Dome was going to be MSG. Of course it's had its major renovations.
While I doubt the Dome will still be used in 10 years by the Flames, especially after the flood, it's a possibility now that the Flames could have the oldest barn in the league and by an entire decade. Although I think it's a slight to no chance the Rangers move from MSG anytime this decade or next.