I just rebooted my computer, and now I have this menu on my Unity panel when no windows have focus. I have nautilus-elementary installed, and when I go to "About" in this menu it brings up a splash-info-thing for nautilus-elementary , leading me to believe that nautilus-elementary put it there. Here is a quick video: http://vid.ly/0t1s3j
Am I insane and this has been around the entire time? Is there a way to remove this? I haven't decided if I like it yet, but right now it seems redundant.