Let me have your attention

I saw this message at a movie theater today and I found it quite interesting.

Have you seen people who like to check their blackberry under the table during meetings? Perhaps someone should design a similar sign like the above and put it in every conference room at work.

And here's the message:

"Let me have your eyeballs. Please leave your crackberry at your office."

(Sounds bloody, but I don't really mean it literally. ;))