For more than one hundred years we can enjoy one of the most favourite attractions ? the movie trailer. Its developement was varied and went through many conceptual changes. It's considered to be one of the most dynamic branches in the film industry. The diploma thesis solves the issue as a complex, deals with the definiton of the movie trailer, its history, forms, technology and genre, rhetorics, basic structure, production process and the individual professional units taking part in its creation. Additionally, the diploma thesis reflects on film marketing, placement of trailers in single media, the Czech trailer scene and it also contains some personal notes, which I have gained during my own work on several trailers.