Addon Spotlight takes a look at the little bits of Lua and XML that make our interfaces special. From bar mods to unit frames and beyond, if it goes in your Addons folder, we'll cover it here.
This mod is strictly for Death Knights. Fortunately, I figure at least half of the WoW population has a Death Knight at this point, so a post like this isn't so much of a problem.
What is a problem is Blizz's official rune UI (at right). I love Blizzard to tiny pieces, but they dropped the ball there, in my opinion. Aside from the icons being a bit ugly and inscrutable, it's flat-out difficult to tell the state of your runes at a glance on the default display. The little rotating line that is supposed to tell you when your runes is ready again is also hard to read, at least for me. And watching critical debuffs on the default target frame is less than pleasant.
Fortunately, DeathKnight.Info Runes and Disease are here to give us all that vital information in readable and flexible form. The default state of the addon (as seen at the top right of this post) has way too much artwork for me; any pixels that don't contain information don't have a place on my screen. There's too much info I want to keep track of. But that's alright, because DKi Runes is extremely customizable.