Hold the CTRL key a bit longer to get a list of all active short-cuts for the current app.
Disable Windows Explorer context menu items.
Synchronize your time with atomic time servers using customizable desktop clock.
Delete all of your Windows Updates downloads.
Display comprehensive information about which modules/processes have opened.
Hide the Taskbar on Windows PCs.
Change the look of Start Button in Windows 7.
Take ownership of files and folders with drag and drop.
Power off your screen (or screens) when you lock your computer.