If you dare.
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Alt + Spacebar + C: Close current windows explorer window

Windows key + Shift + S: Screenshot

Windows logo key + Ctrl + D Add a virtual desktop.
Windows logo key + Ctrl + Right arrow Switch between virtual desktops you've created on the right.
Windows logo key + Ctrl + Left arrow Switch between virtual desktops you've created on the left.

Alt+D then Shift+Enter: Move current tab on browser to new window

Alt + Tab: Switch window

Alt + Shift + Tab: Switch previous window

Windows key + Shift + S: Screenshot

Control + Tab: Cycle to next window

Control + Tab + Shift: Cycle to previous window

Alt + Esc SWITCHES TO NEXT OPEN WINDOW

Alt + Shift + Esc SWITCHES TO PREVIOUS WINDOW

Alt + Tab Cycles through open windows, and switches to the window when the Alt key is released. This is known as Coolswitch. Pressing Escape cancels switching windows.

Alt + Shift + Tab Cycles backwards through open windows, and switches to the window when the Alt key is released. This is known as Coolswitch. Pressing Escape cancels switching windows.

Vista: Cycles through Taskbar buttons, Press Enter or Space to activate a window. This is same as Winkey + Tab in older versions.

Winkey + Tab Cycles through Taskbar buttons, Press Enter or Space to activate a window.

Vista: Cycles through open windows using Windows Flip3D. Release keys to activate window. Pressing Escape cancels switching windows.

Winkey + Ctrl + Tab Cycles through parts of the desktop and taskbar.

Vista: Starts Windows Flip3D. Use Arrow keys, Tab, or Shift + Tab to navigate and Enter or Space to activate. Pressing Escape cancels switching windows.

Alt + Spacebar + C: Close current windows explorer window

Alt + Tab: Switch window