Many times when sitting in front of a computer screen, I need to know the date. I don't tend to keep the date in my permanent memory, so I rely on calendars to remind me. With a Windows computer (from Windows 95 through Vista), you can quickly access the current date by hovering your mouse, don't click, just hover on the time in your system tray.
Watch my quick 40 second tip demonstrating this extremely useful, but often forgotten tip.
Links:
[1] http://helpmerick.com/track_multiple_time_zones_vista_video_tip.htm
[2] http://helpmerick.com/compare_candidates.htm