Source: PC Mag, Aug 7, 2007

PC Magazine staffers reveal their favorites among the lesser-known key combinations.

Windows key–M
Minimizes all Windows (good for when the boss walks into your cubicle). — Whitney Reynolds

Shift–F4
Automatically repeats the previous Find command in Microsoft Word. — Sarah Pike

Windows key–Break
Displays the Systems Properties dialog box. — Jeremy Kaplan

Windows key–U–U
Turns off a Windows PC. The trick is to not hold down the Windows key; just tap it. — Dan Evans

Ctrl–left mouse click
Opens a new tab in Firefox and IE7. — Robert Heron

Ctrl–Shift–A
Changes a highlighted passage in Word from title caps or lowercase to all caps. — Erik Rhey