Hot keys for more comfortable work with Windows 7

Present you useful combinations of hot keys for more comfortable and quicker work in Windows 7. A lot of these combinations make much easier a work with active windows and applications.
Windows + Tab | Calls a screen of switching windows — Flip3D. |
Alt + Tab | Goes through all opened programs and allows seeing thumbnails of opened windows. |
Windows + Space | All opened windows will become transparent. |
Windows + Home | Minimize all windows except active one. |
Windows + Plus or Windows + Minus | Launch windows-magnifier and correspondingly increase or decrease the screen. |
Windows + Arrow up | Maximize window to full screen. |
Windows + Arrow down | Minimize window. |
Windows + Arrow left or right | "Stick" a window with size of half screen to left or right side of screen. |
from Win + 1 to Win + 0 | Navigation over the elements which are in the taskbar. |
Also in Windows 7 combinations continue to work which worked in previous versions of Windows: |
|
Win + E | Open window "Computer" |
Win + R | Open window "Run" |
Win + G | Show Sidebar (bring it forward). |
Win + D | Show desktop. Re-pressing restore all opened windows. |