New hotkeys for Windows 8:
Key combination: Windows 8 functionality:
Windows+Space Switch input language and keyboard layout.
Windows+O Lock device orientation.
Windows+, Temporarily peek at the desktop.
Windows+V Cycle through toasts.
Windows+Shift-V Cycle through toasts in reverse order.
Windows+Enter Launch Narrator.
Windows+PgUp Move the Start Screen or a Metro-style application to the monitor on the left.
Windows+PgDown Move the Start Screen or a Metro-style application to the monitor on the right.
Windows+Shift-. Move the gutter to the left (snap an application).
Windows+. Move the gutter to the right (snap an application).
Windows+C Open the Charms bar.
Windows+I Open the Settings charm.
Windows+K Open the Connect charm.
Windows+H Open the Share charm.
Windows+Q Open the Search pane.
Windows+W Open the Settings Search app.
Windows+F Open the File Search app.
Windows+Tab Cycle through apps.
Windows+Shift-Tab Cycle through apps in reverse order.
Windows+Ctrl-Tab Cycle through apps and snap them as they cycle.
Windows+Z Open the App Bar.
Windows+/ Initiate input method editor (IME) reconversion.
Windows+J Swap foreground between the snapped and filled apps.
Windows+Printscreen It takes and saves the screenshot. It places the saved screenshot into your pictures folder as a PNG.