I love finding new addons. Let me tell you how I found CyCircled, my favorite new change to my UI. I was looking through some of the excellent submissions we're receiving for Reader UI of the Week (shameless plug), and was inspired to go looking for an update to my own UI. Somewhere along the way, I came across the All Deuce UI.
Impressed, but slightly overwhelmed by ADUI, I was about to go back to my old setup. There was, however, one feature of ADUI that I really adored from the get-go. ROUND BUTTONS!
I wanted, no I *NEEDED* round buttons. I like consistency in my UI. If I'm going to have a round minimap, and round minimap buttons, then I've got to have round action bar buttons, right?