Used in raids to provide warnings of events you need to pay particular attention to when tackling various raid bosses. It also provides things like range meters (pointing out who is within 10 yards of you), sound warnings if you've been targeted by the boss for some extra-special attention, etc.
It can also provide similar support for 5-person instance runs.
Deadly Boss Mods has replaced BigWigs as a raid encounter mod in The Honourbound Alliance.
Usage
Unzip the archive and copy the contents of the "DBM-4.16-r1202-Core-and-WotLK-Mods.zip Folder" folder into your "AddOns" folder in your WoW directory. For most people, there's no need to configure it. However, you can type "/dbm" to bring up its menu. It also has a minimap icon that you can right-click on to configure. Most of the options are per encounter and are self-explanatory if you understand that particular encounter.