What is the best NHL playoff series of all time?

2013 ECR2: Bruins vs Maple Leafs

Toronto led 4-1 with 10 minutes left in Game 7 before Boston completed one of the most gut-wrenching collapses in NHL history.

Chris Pronger's Oilers upset the defending champion Ducks in five games, sparking Edmonton's improbable run to Game 7 of the Stanley Cup Final.