Oh, and by the way, the end of the world is nigh. I know these constant announcements keep dinking up your schedule, what with the need to schedule around dentist appointments and piano lessons, but as they say "knowing is half the battle."
The best end of the world announcement I ever saw was on the door of a horn instructor:
Due to a lack of adequate trumpet players,
the end of the world has been postponed 22 days.
We apologize for any inconvenience.