Boston Bruins over New York Rangers 4 games to 2.
Montreal canadiens
Marian Hossa (now of the Chicago Blackhawks), played in the 2008 Stanley Cup Finals for Pittsburgh (and lost), played in the 2009 Stanley Cup Finals for Detroit (and lost), and played in the 2010 Stanley Cup Finals for Chicago (and won).
The Montreal Canadiens and the Calgary Flames.
New York Rangers.
27 different teams
Teams do not retain possession of the Stanley Cup after winning it. The Cup is passed on to the next year's champion.
The Dallas Stars defeated the Buffalo Sabres in 6 games.
Montreal Canadiens - 4 vs Chicago Blackhawks - 3
No, teams do not get to keep the Stanley Cup if they win the championship. The Stanley Cup is a trophy that is awarded to the winning team each year, but it is returned at the end of the season to be awarded again the following year.
The Pittsburgh Penguins vs the Detroit Red Wings. The same teams that played the year before. Only in 2008 the Detroit Red Wings won the cup, but in 2009, the Penguins took home the cup.
Detroit Red Wings and Pittsburgh Penguins. Detroit won.
4