A thread that needs to be back. "Post your UI" is okay, but I want a place to look for discussion of interesting things that I should download. Maybe avoid the totally obvious staple mods (ItemRack, SCT, ECB, KTM, etc).

I'll start with Debuff Filter:
http://wow-en.curse-gaming.com/downl...debuff-filter/
I've been using this for a long time, and recently seen it talked about a bit more here. Give it to your raiders (especially DPS classes) to make it easy for them to know when any important debuff goes down.

NeetToKnow (Or some variety)

I can't live without a slice and dice timer. It bugged one gruul fight and I was completely worthless. If thats too staple (I don't know a rogue without one) then Sanity inventory yet. I love being able to search through my inventory with ease.

Dynrepbar - ace2 mod.

Unfortunately I discovered this mod about 2 weeks too late as I've been exalted with pretty much everyone for a month or so now, but it's amazing for when you've just hit 70 and decide you want to get rep with factions. It automatically sets your rep tracking bar to the faction you last gained rep with. Works with both FuXPFu (which is what I use it with) and the blizzard thing - probably anything that uses the blizzard default tracker will work.

SpamSentry. Down with gold seller spam.

Geist.

Bind one button to it (in my case Y). When you press and hold that button a block of 25 buttons appears under your mouse. When you release your bind button it disappears.

Its amazing for removing those not-so-often used abilities/consumables from your main display like food/water, summoning pets/healthstones, creating mana gems etc that you really don't need displayed all the time.

I've recently taken a liking to UnitActionBars myself, while the designer seems to have intended it as an alternative to click-casting, I've changed it so that it's perfect for doing 5 minute blessings.

It's very nice to have when you have to individually overwrite some buffs on the varying hybrid classes from time to time. I just right-click them, select the proper buff in the little menu that pops up, and voila.

Agreed, Geist is a very useful mod. I still think Sprocket (which it replaced for me) was a better implementation of the appear-at-mouse-location-buttons concept, but Geist is somewhat more flexible. Oh, and that it still works is good too. :-D

The one special mod that I'll never be able to play the game without though, will probably always be Bagnon. It's the best all-in-one bag mod I've used, and after about 2 years with using such a mod, I can't really imagine going back to default bags.

Mr. Plow will organize your one in all bag for you. It makes things even better, i suggest that hand in hand with one bag.

I don't have a picture handy, but the main draw for me is how much more efficient a all-in-one bag mod is in terms of screen space than seperate bags. And while you can organize things pretty well with the default 5 seperate bags, there are times when you don't have enough slots in one bag for one category of items, or too many. With an all-in-one mod, you can group them however you want. On my characters, gear/mounts/class reagents are at the bottom, then above them are the consumables, then above that are the quest items, and the rest of the junk that I have no real need to keep are at the top. With it set up like that, I can always find what I'm looking for easily.

Oh, and Bagnon/Banknon's ability to let you see the contents of your other characters' bags/bank is very useful as well.

http://www.wowace.com/files/ArkInven...-r28103.61.zip

Ark Inventory allows you to group items by whatever you want and caches your bank so you can view it anywhere at any time. It's quite honestly the best bag interface I've seen to date.

Hopefully Gello will add back in the vBagnon categories feature; other than that, Bagnon has had my onebag dollar for a long time. I just organize the bag by "areas" - the bottom half of the bag is gear, left edge gets consumables, right edge holds reagents, and the area in the center of the U gets everything temporary.

Debuff Filter is also a great mod that's only going to be getting better.

Since I've been leveling lately, LightHeaded has been quite useful (WowHead comments in your questlog are nice, much less alt-tabbing).

Eavesdrop is great, PitBull is coming along *very* nicely, but the three mods I find it hardest to play without?

Bongos for actionbars.
IceHUD for HUD/player/target frames.
NECB for timerbars/castbars. This one will, incidentally, probably be falling by the wayside with 2.1's "show only own debuffs, and time remaining" feature.