Windows 7 Shortcuts

Windows 7 improved window management using the keyboard (hotkeys)

You have probably heard already how Windows 7 simplifies and aids window management by letting you move and dock windows using the mouse, for example, dragging a window to the top edge will maximize it, or clicking on the right bottom corner will show the desktop. Now, you can do all this and many others using some equally useful keyboard shortcuts (hotkeys).
Brandon Paddock, who is one of Windows 7 Explorer developers, recently posted a complete list of Windows 7 hotkeys which I have copied below. I have also highlighted those which I believe are most useful and probably golden time-savers if you get to incorporate them into your day to day usage (though you will first need to use W7 as your primary OS for that).

Windows 7 Show desktop shortcut

General

Win+Up	Maximize
Win+Down	Restore / Minimize
Win+Left	Snap to left
Win+Right	Snap to right
Win+Shift+Left	Jump to left monitor
Win+Shift+Right	Jump to right monitor
Win+Home	Minimize / Restore all other windows
Win+T	Focus the first taskbar entry Pressing again will cycle through them, you can can arrow around. Win+Shift+T cycles backwards.
Win+Space	Peek at the desktop
Win+G	Bring gadgets to the top of the Z-order
Win+P	External display options (mirror, extend desktop, etc)
Win+X	Mobility Center (same as Vista, but still handy!)
Win+# (# = a number key)	Launches a new instance of the application in the Nth slot on the taskbar. Example: Win+1 launches first pinned app, Win+2 launches second, etc.
Win + + Win + – (plus or minus key)	Zoom in or out.

 
Explorer

Alt+P

Show/hide Preview Pane

 
Taskbar modifiers
 

Shift + Click on icon	Open a new instance
Middle click on icon	Open a new instance
Ctrl + Shift + Click on icon	Open a new instance with Admin privileges
Shift + Right-click on icon	Show window menu (Restore / Minimize / Move / etc) Note: Normally you can just right-click on the window thumbnail to get this menu
Shift + Right-click on grouped icon	Menu with Restore All / Minimize All / Close All, etc.
Ctrl + Click on grouped icon	Cycle between the windows (or tabs) in the group