One thing that is clear from the feedback on my previous article on hidden Windows 7 features: we love our keyboard shortcuts. So here are a few more selected shortcuts.

Press this key	To do this
Desktop Shortcuts
	Open or close the Start menu.
+ R	Open the Run dialog box.
+ D	Display the desktop.
+ Spacebar	Preview the desktop.
+ P	Choose a presentation display mode.
Window Management
+ M	Minimize all windows.
+ Shift + M	Restore minimized windows to the desktop.
+ Up Arrow	Maximize the window.
+ Left Arrow	Maximize the window to the left side of the screen.
+ Right Arrow	Maximize the window to the right side of the screen.
+ Down Arrow	Minimize the window.
+ Home	Minimize all but the active window.
+ Shift + Up Arrow	Stretch the window to the top and bottom of the screen.
+ Shift + Left Arrow or Right Arrow	Move a window from one monitor to another.
Task Switching
+ T	Cycle through programs on the taskbar.
+ Tab	Cycle through programs on the taskbar by using Aero Flip 3-D.
Ctrl + + Tab	Use the arrow keys to cycle through programs on the taskbar by using Aero Flip 3-D.
Ctrl + + B	Switch to the program that displayed a message in the notification area.
+ G	Cycle through gadgets.
Taskbar Shortcuts
+ number	Start the program pinned to the taskbar in the position indicated by the number. If the program is already running, switch to that program.
Ctrl + + number	Switch to the last active window of the program pinned to the taskbar in the position indicated by the number.
Alt + + number	Open the Jump List for the program pinned to the taskbar in the position indicated by the number.
Windows Explorer Shortcuts
+ Pause	Display the System Properties dialog box.
+ E	Open Computer.
+ F	Search for a file or folder.
+ L	Lock your computer or switch users.

If you are interested in drinking from the fire hose, here is the definitive list of shortcuts.