Oh, thanks for that! I don't use unity -- I'm too prone to RSI to really use anything with a mouse -- and I'm too stingy on my screen estate (I run xmonad). But either way it's nice to be aware that there are extentions... the result page(s!) for alt tab was both encouraging and a little scary...
It correctly switches and changes order based on your alt+tab history, and it splits alternate workspaces up into an end section which switches workspace for you, so 'shift + alt + tab' becomes 'go to the last app on another workspace i used'. Very nice.
