Peterson was creating radio commercials for the Stanley Kubrick film, Dr. Strangelove, and the collaboration was so successful that in January of the following year, LaFontaine and Peterson formed a professional partnership – with their “illustrious” headquarters located in Peterson’s tiny apartment.

Their enterprise quickly expanded to over 30 employees, and Floyd L. Peterson, Inc. was one of the first companies to work exclusively in motion picture advertising. At this time, most film promotion was done in-house by the studios, but LaFontaine and Peterson sought to break that tradition. It was during this time of industry growth that the format for the modern trailer (previews of coming attractions) was developed, and LaFontaine and Peterson were among the first to create the catch phrases that still dominate trailers today: “In a world,” “A one-man army,” and “Nowhere to run, nowhere to hide, and no way out.”

In 1965, when a scheduling mix-up at the company resulted in an announcer missing a session, LaFontaine had to create a “scratch” narration for radio spots for the film Gunfighters Of Casa Grande in order to present something to the client, Metro-Goldwyn-Mayer. To his surprise, they not only bought the concepts, but bought his performance, as well, and over the next 16 years LaFontaine voiced thousands of spots and hundreds of trailers.

In 1976, LaFontaine started his own production company, Don LaFontaine Associates, and snagged his first assignment as an independent: “The Godfather, Part II.”