An old skool Command Line Junkie’s rejoice in the world of GUI?
“”Enso is dead simple to use. You just hold down the Caps Lock key and type an Enso command, which is displayed in a translucent overlay. Once the command is typed, you simply release the Caps Lock key to activate it, and the overlay disappears. If you type fast, it all happens in a flash. For instance, to launch the Firefox Web browser, you just hold down the Caps Lock key and type "open firefox." To look up the meaning of the word "proclivity," you just hold down the Caps Lock key and type "define proclivity."’ - Walt Mossberg of the Wall Street Journal
And not to mention that recently Mozilla hires developers from Humanized to innovative their Firefox and other new projects too.