It's a tough decision this year. There are three players that deserve serious consideration: Bergeron, Chara, and Rask. Bergeron is a great all around player, and his toughness exemplifies what Boston Bruins hockey is all about. Chara is having a great offensive season so far and he was very good for most of last season's playoffs. Rask was great for most of the playoffs, and he's been great this season (5th in GAA, 4th in SV%, 3rd in wins).
I'm going to give the award to...
And here's why: He's asked to do everything for this team. He plays close to half the game, plays defense against the opponent's top lines, plays the penalty kill, plays the power play, and he's a part-time enforcer.
This season he's scored 9 goals, tied for 5th on the team. His 6 power play goals lead the team.
And don't forget that he's the captain.
So while Rask and Bergeron also deserved this award, I think Chara deserved it just a little bit more, for all he's asked to do, and for all he does.