Len Janson is an American writer and director whose career in animated cartoons and live-action motion pictures spanned several decades beginning in the 1960s. He began work as an in-betweener at the Walt Disney cartoon studio. By 1965 he had become a story man with his first screen credit inRudy Larriva'sBoulder Wham!. Soon after, he teamed withChuck Menville to produce a series of live-action films which used the pixilation technique.[1] An example isStop Look and Listen. By the early 1970s, Janson and Menville had become major names in the animation industry and welcome storytellers at studios such asFilmation andHanna-Barbera. Their partnership ended with Menville's death in 1992. Janson remained active for a few more years, mainly as story editor forSonic the Hedgehog. He also wrote episodes ofBaywatch Nights.