In the present media-sensitive world, many organizations are increasingly likely to employ professionals who have received formal training in journalism, communications, public relations and public affairs in this role in order to ensure that public announcements are made in the most appropriate fashion and through the most appropriate channels to maximize the impact of favorable messages, and to minimize the impact of unfavorable messages. Celebrity spokesmen such as popular local and national sports stars (such as Michael Jordan or Bob Uecker) or television and film stars (such as Beyoncé or Michael J. Fox) are often chosen as spokespeople for commercial advertising.