Commercial advertising media can include wall paintings, billboards , street furniture components, printed flyers, radio, cinema and television ads, web banners, web popups, skywriting, bus stop benches, magazines, newspapers, town criers, sides of buses, taxicab doors and roof mounts, musical stage shows, subway platforms and trains, elastic bands on disposable diapers, stickers on apples in supermarkets, the opening section of streaming audio and video, posters, chicken niblets, and the backs of event tickets and supermarket receipts. Any place an "identified" sponsor pays to deliver their message through a medium is advertising.

Virtual advertisements may be inserted into regular television programming through computer graphics. It is typically inserted into otherwise blank backdrops or used to replace local billboards that are not relevant to the remote broadcast audience. More controversially, virtual billboards may be inserted into the background where none existing in real-life. Virtual product placement is also possible. Increasingly, other mediums such as those discussed below are overtaking television due to a shift towards consumer's usage of the Internet as well as devices such as TiVo.

A television commercial is a form of advertising in which goods, services, organizations, ideas, etc. are promoted via the medium of television. Most commercials are produced by an outside advertising agency and airtime is purchased from a television channel or network. The vast majority of television commercials today consist of brief advertising spots, ranging in length from a few seconds to several minutes. Commercials of this sort have been used to sell every product imaginable over the years, from household products to goods and services, to political campaigns. The effect of television commercials upon the viewing public has been so successful and so pervasive that it is considered impossible for a politician to wage a successful election campaign, in the United States, without airing a good television commercial.