UI Mods

[Watto44]

My current setup.

Visible mods:
ag_UnitFrames - What Bolty Said.:)
Bongos - Has a couple of extra features that I like, so I use this over Bartender
Natur Enemy Castbar - You PvP, you Necb:)Configurable version of bliz's enemy castbar, with some extra bells and whistles.
ItemRack - Stupidly useful gear management mod.:)
OmniCC - My personal favorite cooldown display mod. Since I have everything hotkeyed, I can layout my actionbars just to display a couple of range finders and all my cool downs. Makes anything more showie a waist of memory.:)(And it's also handy in that it shows the cool down of items in your bags, bank, character screen etc.)

Not visible mods:
GoGo Mount - Mount management for people too lazy to macro it.:)
eCastingBar - Purdy - and highly configurable - casting bar.
nQuestLog - Quest stuff. Same as everything else I guess. I just picked it at random from the ace page.:)
TinyTip - What Bolty said mark 2.
MobInfo2 - Basically mobhealth with a bunch of bells and whistles. I was using it because reverted to blizzards standard unit frames, and couldn't find an update of mobheathbliz. Will get around to switching back to mobhealth some day soon.
ScrollingCombatText - Highly configurable version of blizzards scrolling combat text. I really hate the enormous writing on the standard bliz version, plus I need it to run spellalertSCT.
SpellAlertSCT - You PvP, you spellalert.:)I prefer the SCT over the standard version for the bigger writing and the fact that it doesn't spam anywhere near as much.
Simple Combat Log - What Bolty said, mark 3.:D

To do list:
Download Prat. I was a massive fan of simple chat, and it looks like Prat would be a good replacement for it. I just wish it didn't have so many extra features that I'll never use, but such is the mod world.:)