Hockey is a sport that is played at such high speeds, and collisions are a part of the game. It is sometimes a fine line between a hard hit and a cheap or dirty hit. Some players live on that line. Many can stay below it, but there are ones who blow past it. These are the players who are the dirtiest to have played the game.
Some players have made the list for a career of questionable hits, suspensions and fines. Others have had a brain-fart moment, one in which they went so far over the line that they have to be included on the list.