Harold Ramis Dan Aykroyd on the screenplay for "Ghostbusters", which became one of the biggest comedy hits of all time, in which he also starred as Dr. Egon Spengler, a role he reprised for the 1989 sequel, "Ghostbusters II" (which he also co-wrote with Aykroyd). His later film "Groundhog Day" has been called his "masterpiece". His films have been noted for attacking "the smugness of institutional life ... with an impish good [will] that is unmistakably American". They are also noted for "Ramis's signature tongue-in-cheek pep talks". Sloppiness and improv were also important aspects of his work. Ramis frequently depicted the qualities
John Spengler and strategies, and was a member of Harvard's Greenhouse Gases Executive Committee. He has been an advisor to the World Health Organization on indoor air pollution, personal exposure, and air pollution epidemiology. In 2003, Dr. Spengler received the 9th Annual Heinz Award in the Environment. Ph.D., 1971, State University of New York, Albany John Spengler John Daniel Spengler is an American health scholar currently the Akira Yamaguchi Professor of Environmental Health and Human Habitation at Harvard T.H. Chan School of Public Health and a Faculty member in the Department of Environmental Science and Public Policy of the Faculty of Arts