Harold Allen Ramis (November 21, 1944 – February 24, 2014) was an American actor, director, and writer specializing in comedy. His best-known film acting roles are as Egon Spengler in Ghostbusters (1984) and Russell Ziskey in Stripes (1981); he also co-wrote both films. As a writer-director, his films include the comedies Caddyshack (1980), National Lampoon's Vacation (1983), Groundhog Day (1993), and Analyze This (1999).