The article is devoted to the philosophic-aesthetical analysis of a «special event» phenomenon. It reveals cultural, historical, and aesthetical basics of a celebration and its social functions. The celebration is approached as a communicative technology. A big part of the article is devoted to the corporate celebrations - it reveals the goals of such celebrations, principles of their organization, and specifics of conduct. Corporate celebration is presented as a communicative technology used for building positive relations within the internal audiences (employees) of the company, for developing corporate culture, and forming corporate identity.