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
Egon Spengler character Dr. Jillian Holtzmann and Harold Ramis' character Dr. Egon Spengler created the film's proton packs. The paragraph accompanying the video read: "Engineers at Sony Corporation developed the 2016 Proton Pack™ in collaboration with nuclear engineer and munitions expert Dr. Jillian Holtzmann. Sony President and CEO Kazuo Hirai commented “The perfection of the Proton Pack™, long a dream of the world’s greatest engineers since first pioneered by" Dr. Egon Spengler "of Columbia University, is an example of Sony’s relentless pursuit of innovation. It absolutely delivers the wow factor that is so important to our company mission." Additionally, in the film,