When you advertise your ad agency, it must be perfect. When your agency's so small that it is headquartered in a phone booth in New York, you want people to remember it. Clark&Kent made their location memorable by creating business cards that fold out into the shape of a phone booth. Clever? Ha! Why isn't there a spectacled journalist changing clothes inside? After all, that would make me remember Clark&Kent! Link -via Laughing Squid