Has worked throughout his career extensively in creating a cultural bridge between Japan and America. He worked for 4 years in advertising and sports promotion, and got involved in the first satellite broadcast to Japan of the Indianapolis 500, US open tennis and US men and women golf championships. During this period, he was the intermediary for ABC, NBC, CBS and their Japanese counterparts, including NHK, TBS, TV Asahi among others. He has spent the last 15 years producing TV commercials for Japan and also working as an assistant director for feature films in the US. Cellin has directed many commercials for the Japanese and US markets.