WowAce

Does a /who search of multiple dungeons.

PreferredItems

FuBar_ExperienceFu

Bars showing amount of buffstacks

Smooth combat HUD based on ArcHUD2

Assistance to the dance during Dread Spray

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

Keeps track of healing spells cast by everyone in a group.

A loot distribution addon meant to improve master looting during raids.

Provides the ability to suppress specific spellcasts like "Deaden" from your casting bars.

Cartographer_Mailboxes

Allows custom-triggered boss mod timers to be created

Replacement for the default nameplates.

Sets you to DND when you fight a boss, and some other crap.

VendorSearch adds search features when buying items from any vendor

Profiler of the Lords of the Zodiac guild.

Restores channels and channel-window associations after disconnects remove them.

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

A Perl layout with oUF.

Desesperated announcing to clearly show the skillings of act inplay.