Windows logo key+spacebar: Switch input language and keyboard layout
Windows logo key+O: Locks device orientation
Windows logo key+Y: Temporarily peeks at the desktop
Windows logo key+V: Cycles through toasts
Windows logo key+Shift+V: Cycles through toasts in reverse order
Windows logo key+Enter: Launches Narrator
Windows logo key+PgUp: Moves Metro style apps to the monitor on the left
Windows logo key+PgDown: Moves Metro style apps to the monitor on the right
Windows logo key+Shift+.: Moves the gutter to the left (snaps an application)
Windows logo key+.: Moves the gutter to the right (snaps an application)
Windows logo key+C: Opens Charms bar
Windows logo key+I: Opens Settings charm
Windows logo key+K: Opens Connect charm
Windows logo key+H: Opens Share charm
Windows logo key+Q: Opens Search pane
Windows logo key+W: Opens Settings Search app
Windows logo key+F: Opens File Search app
Windows logo key+Tab: Cycles through Metro style apps
Windows logo key+Shift+Tab: Cycles through Metro style apps in reverse order
Windows logo key+Ctrl+Tab: Cycles through Metro style apps and snaps them as they are cycled
Windows logo key+Z: Opens App Bar