Fatality is a very simple addon with almost no in-game configuration which announces information to a specified channel about the last hit a person took before they died.

The number of people reported is configurable, as is the delay between each report, and whether or not timestamps are displayed - just open up Fatality.lua and edit the first 7 lines to suit your needs.

Below is an example of what would be reported to raid chat (default) after a player (Moop) took 30,000 melee damage from Stormcaller Brundir, resulting in death:

Fatality: Moop > 30000 Melee > Stormcaller Brundir

Toggle on/off in-game: /fatality or /fat

Only works inside raid instances.

P.S. I wrote this to help familiarise myself with the WoW API and Lua in general, hope someone'll find it fun/useful.