As the NHL attempts to eliminate unnecessary violence from the game, the phrase "repeat offender" has become a hot term.
Patrick Kaleta was suspend five games for this hit on New York's Brad Richards, a hit that may not have drawn a suspension if Kaleta weren't already on the league's hit list for his headbutting tendencies.
Kaleta has become one of hockey's poster boys for the need for disciplinary action as the league is cracking down on headshots and dangerous boarding plays, among other acts of aggression.
So who are hockey's big offenders? Who has caught the league's eyes in the past? Who carries around the reputation of being one of hockey's major aggressors?
This list features the most volatile players in the game today, who have gone on streaks of aggression that have gotten themselves in trouble. If Brendan Shanahan still had speed dial, these guys would be on it.