Harold Allen Ramis was an American actor, comedian, and filmmaker. His film acting roles include Egon Spengler in Ghostbusters (1984) and Ghostbusters II (1989), and as Russell Ziskey in Stripes (1981); he also co-wrote those films. As a director, his films include the comedies Caddyshack (1980), National Lampoon's Vacation (1983), Groundhog Day (1993), Analyze This (1999) and Analyze That (2002). Ramis was the original head writer of the television series SCTV, on which he also performed, as well as a co-writer of Groundhog Day and National Lampoon's Animal House (1978). The final film that he wrote, produced, directed, and acted in was Year One (2009).

Analyze That is a 2002 American crime comedy film directed by Harold Ramis and produced by Paula Weinstein and Jane Rosenthal. The film is a sequel to the 1999 film Analyze This. The film starred Robert De Niro and Billy Crystal who respectively reprise their roles as mobster Paul Vitti and psychiatrist Ben Sobel.