Window 7 Short cut Keys [ Usefull if you are Animating in Maya with your own customization]

Win + D = Show Desktop,
Win + M = Minimize all windows,
Win + E = Launch Win Explorer ,

Win + R = Run Command,
Win + Shift + M = Maximize all windows,
Win + L = Lock OS,

Alt + Tab = Shift between Windows,
Alt + Shift + Tab = Shift between Windows (Reverse Order),
Alt + Space bar + N = Minimize current window,

Alt + F4 = Close Current Window,
Alt + Spacebar + X = Maximize,
Alt + Spacebar + R = Restore,



Ctrl+Esc = Start Menu,
Ctrl + Shift + Esc = Show Task Manager,