The Flames can go very deep this year. They could also beat out Detroit or San Jose in a seven-game series. Both of those teams have looked quite beatable recently, and Calgary has a LOT of offensive firepower.
Vancouver has a chance as well. Montreal, if they even make it into the playoffs, will not go very deep at all. They are not that great of a team to be honest.
Ottawa, Toronto, and Edmonton probably won't make the playoffs.