Matt Cooke is an at-large repeat offender in the NHL right now. Year after year, he's dished out cheap hits on the opposition, including the hit to the head that has ultimately kept Boston Bruins' star playmaker Marc Savard out of play.
It's baffling to think that Cooke has been suspended four times since 2009, yet it took the league four times (four brutal incidents) to really throw the book at him. On March 20th, 2011, Cooke deliberately threw an elbow at the head of New York Rangers defenseman Ryan McDonagh. Cooke was banned ten regular season games and the first round of the playoffs.
Honorable Mentions: Ulf Samuelsson, Ben Eager, Marty McSorley, Bryan Marchment