Have you made your little pencil pusher's day special?

If you haven't, get on it.  Afterall, Secretary's Day, as it's known to anyone who isn't in fact a secretary, only comes once a year.  Kind of like Christmas and Thanksgiving, for secretaries, so be on your best behavior. Keep the condscending remarks and ass pats to a minimum today too.  Not saying to omit them entirely necessarily, just reign 'em in a bit.  And whenever you get around to dialing up the help's extension from your office, make sure you don't say "Happy Secretary's Day!" into the speaker; It's "Administrative Professional's Day" to them, and, for today, that's what they deserve to hear. 

If you really want to go the extra mile, actually walk across the hall to her office and deliver the well wishes in person.  Following it up with an ass pat will probably be acceptable at this point, especially if you remembered the "Administrative Professional" part, but I'd advise forgoing the customary, ever so slight, squeeze today.  Given the context, that may be pushing it a bit, so think "Baseball". 

For dramatic effect, it may be worth holding back the greeting til around 4:57 or so.  That way, any expectations she may have had of you remembering her special holiday will have bottomed out.  This also maxes out the utility of your recognition of her, and the inevitable boost in morale may even increase productivity throughout the rest of the week.  Expect things to be back to normal/above average by Monday though.

If you don't have a personal secretary of your own, don't sweat it.  Secretary's Day technically applies to all types of help around the office: receptionists, paralegals, assistants, and support personnel in general.  With that in mind, there's really no excuse to not take a moment or two to follow some of the suggestions set out above.  Who knows, maybe making this day a special one for your "administrative professionals" will in turn make it a special one for you.  Good luck!