Filmmaker Kevin Smith argues that every time you are speaking to a group of people of any size, you have an obligation to be entertaining.
I could not agree more. Whether it's a staff meeting or professional development or a sales conference, you have a duty to engage and amuse your audience while transmitting the necessary information.
I think this rule can also be applied in other types of communication as well. Cleverly designed 404 pages that delight the reader and amusing road signs are two examples of opportunities to stand above the crowd and entertain your audience while also transferring the necessary information.
Here is another example of a sign that we see all the time, except in this case, it has been brilliantly written to delight its audience: