Tall, stony-faced, white-maned Frank Gerstle is most familiar to the baby-boomer generation for his many TV commercial appearances. In films from 1949 through 1967, Gerstle was generally cast as military officers, no-nonsense doctors and plainclothes detectives. His screen roles include Dr. MacDonald in DOA (1949), "machine" politician Dave Dietz in Slightly Scarlet (1954) and the district attorney in I Mobster (1959). Some of his more sizeable film assignments could be found in the realm of science fiction, e.g. Killers From Space (1953), The Magnetic Monster (1953) and Wasp Woman (1960). A prolific voiceover artist, Frank Gerstle pitched dozens of products in hundreds of TV and radio ads, and was a semi-regular on the 1961 prime-time cartoon series Calvin and the Colonel.