Pitbull4 - raid/party/focus/target frames (I'm addicted to see the raid's targets)
Prat - for chat
Big Brother - MD/CC-tracker
Bartender - action bars (with ButtonFacade to skining)
ActionButtonText - debuff timer on actionbars
OmniCC - show CD's on actionbars
Quartz - castingbar for me and my target (I don't need to see anybody else.)
Combattext - Milk's Scrolling BattleText (it show's only my pet's crit and my SS at far right, and my damages to the left to it, and shows incoming heal at far left.)
Recount - DMG meter
Omen - Threat meter
Baggins - Bags
caelNamePlates - little nameplates
BuffEnough - buff tracker (shows missing raid-buffs)
DBM - bossmod
DebuffFilter - to show some important debuff
ElkBuffbars - buffs/debuffs on me
ErrorFilter - to hide error-message spamming
Outfitter - cloth-changes
Fubar - to manualy change Outfits/traking, to show durability and fps/lag
OPie - best addon for handle traps/aspects/mounts
ora2
Sexycooldown - to track middle-to-high combat CD's and item-ICD's
SexyMap - minimap addon
TimeToDie - calculates time till target's death
TipTac - Tooltips
Some explanation:
The bars at right-top to my own healtbar is ElkBuffbar's second buff-group which shows only buffs that are show-timed and affects my play-style: RF, item-procs, racials, Bloodlust, haste-potion, Empowered darkness, etc.
(Other things that are not so important at the moment (Replenisment, etc.) and longer buffs (BoK, BoM, etc) are showed in the top-right corner.
In the middle the are a little action-bar which only shows Kill shot, Chimera, Aimed, Serpent Sting and Hunter's Marks (at MM talent.)
Numbers on KS, Chimera, Aimed are from OmniCC and shows the CD on theese shots, and numbers on Serpent Sting and HM are from ActionButtonText which shows the sting/mark (de-)buff-times, see that 5 button is enough to me to maintain my shot-priority.