Wikipedia article "Penalty (ice hockey)" includes the following section:
The record for the most penalty minutes in one season is held by Dave Schultz of the Philadelphia Flyers with 472 in the 1974–75 NHL season. The record for most penalty minutes in a career is held by Tiger Williams who had 3,966 over 14 years. The active penalty minute leader is Sean O'Donnell from the Philadelphia Flyers, who has accumulated 1,727 PIM. O'Donnell is now playing in his 16th NHL season. O'Donnell's teammate Ian Laperriere has more penalty minutes (1,956 PIM), but Laperriere has been placed on long-term injured reserve and therefore is not active.
The most penalties in a single game occurred in a fight-filled match between the Ottawa Senators and Philadelphia Flyers on March 5, 2004 when 419 penalty minutes were handed out. Statistically, a game misconduct counts as 10 penalty minutes, in addition to other penalties handed out. In rare cases (as a result of multiple infractions, for instance the player participating in multiple fights), multiple game misconducts may be handed to a player — that is merely statistical, not (automatically) a multi-game suspension, although the league will often suspend the player in a subsequent decision.[original research?]