There are some people who hotkey a few abilities into their interface, relying on the number row and some macros to take care of the brunt of the work when it comes to mashing abilities. Vardelm's UI, however, has taken the notion of "hotkey crazy" to a whole new level. Completely eschewing action bars for an invisible approach to hotkeys, Vardelm makes efficient use of his keyboard while keeping the UI comprehensive and cohesive. Suffice to say, I'm impressed with the hotkeys.
There is still something frightening to me about not having action bars readily available and in plain sight. Maybe they're my safety net while I perform the delicate trapeze of raid tanking, comforting me with their visual presence. Take away the net and I could panic so hard that I'd fall harder than Dick Grayson's parents. The upside would be becoming a rich dude's ward, so I guess that isn't so bad.
Gallery: Reader UI of the Week gallery