I have been a developer since 1991 when I left university with a major in Artificial Intelligence (yeah I know, don't rub it in). Now I am interested in the UX side of software development, because, mostly, it is done very poorly, particularly in enterprise domains.
My worst pet hate is music on page load.
My fave UI at the moment is Flipboard on the iPad.
I don't believe you can design a better traffic light.