Windows 7 boasts a lot of great new shortcuts
Here are some to use
Win+Home: Clear all but the active window
Win+Space: All windows become transparent so you can see through to the desktop
Win+Up
arrow: Maximize the active window
Win+Down arrow: Minimize the window/Restore the window if it’s maximized
Win+Left/Right arrows: Dock the window to each side of the monitor (If you’ve got dual monitors, adding Shift to the mix (e.g., Win+Shift+Right arrow) will move the window to the adjacent monitor.)
Win+T: Focus and scroll through items on the taskbar.
Win+P: Adjust presentation settings for your display
Win+(+/-): Zoom in/out
Shift+Click
a taskbar item: Open a new instance of that application