Twenty Windows 7 Keyboard Shortcuts

From Desktop

 Windows Key + Tab = Aero [press Tab to cycle between Windows]

 Windows Key + E = Windows Explorer is launched.

 Windows Key + R = Run Command is launched.

 Windows Key + F = Search (which is there in previous Windows versions too)

 Windows Key + X = Mobility Center

 Windows Key + L = Lock Computer (It is there from the earlier versions as well)

 Windows Key + U = Ease of Access

 Windows Key + P = Projector

 Windows Key + T = Cycle Super Taskbar Items

 Windows Key + S = OneNote Screen Clipping Tool [requires OneNote]

 Windows Key + M = Minimize All Windows

 Windows Key + D = Show/Hide Desktop

 Windows Key + Up = Maximize Current Window

 Windows Key + Down = Restore Down / Minimize Current Windows

 Windows Key + Left = Tile Current Window to the Left

 Windows Key + Right = Tile Current Windows to the Right [Continue pressing the Left and Right keys to rotate the window as well]

 Windows Key + # = Quicklaunch

 Windows Key + = = Magnifier

From Windows Explorer

 Alt + Up = Go up one level

 Alt + Left/ Right = Back/ Forward