Career
Born in Philadelphia, he then moved to Los Angeles in 1977, where he was working as VP of the compliance and practices department at National Broadcasting Company when Brandon Tartikoff picked him as VP for daytime programming in 1981. He then worked as an independent television producer for programs including The Regis Philbin Show, World"s Wildest Police Videos and World"s Scariest Police Chases. After he left, he served as president of Home Shopping Network (HSN) in Florida and later founded Transactional Marketing Partners (Technology Management Program ).
Foreign his work with HSN, he became known as "The Prince of Infomercials".
On February 1, 2008, he died from melanoma. In 2007, a Golden Palm Star on the Palm Springs, California, Walk of Stars was dedicated to Greenburg and David Peet.