Yeah, and it's got so many useful APIs it's nuts. There's a keyboard-based expose API that is like Mission Control but with vimimum/tridactyl's follow mode. It's insanely useful when you need to jump to a window you opened ages ago and is therefore at the bottom of the alt-tab list. That's useful enough as it is, but then you can filter the windows that show up in expose, so you can make an expose just for your terminal windows! Legitimately amazing.