Win+D – Minimize all windows and show the desktop
Win+E – Launch Explorer with Computer as the focus
Win+G – Cycle through gadgets
Win+L – Lock the desktop
Win+M – Minimize the current window
Win+R – Open the Run window
Win+T – Cycle through task bar opening Aero Peek for each running item
Win+h – Move current window to full screen
Win+U – Open the Ease of Use center
Win+Space – Aero Peek the desktop
Win+Tab – Flip 3D
Win+Pause – Launch System applet
Win+Shift+arrow – Move current window to alternate screen
Win+i – Restore current full-screen window to normal size or minimize current window, if not full-screen
Alt+F4 – with windows closed launches the Shut Down Windows dialog box.
Alt+Tab – Film Strip