Taunt Tattle
This is another very simple addon that will print to your default chat frame any taunts that are issued nearby you. It supports all Warrior, Paladin, Druid and Death Knight taunts as of 3.0.8. It will tell you who taunted, what taunt they used, and the target of their taunt. For AOE taunts, it will simply say who did it.
This was built just to give a non-obtrusive quick look in raids at who is taunting.