Jo Flaherty, left, Eugenie Ross-Leming, second left,, Harold Ramis, second right, Jim Belushi, right, and Judy Morgan perform a skit as part of celebrations marking the 50th anniversary of improv theater, The Second City, in Chicago, Dec. 12, 2009.
Ramis co-wrote four of the American Film Institute's 100 Funniest Movies: Ghostbusters (1984) at No. 28, Groundhog Day (1993) at No. 34, Animal House (1978) at No. 36 and Caddyshack(1980) at No. 71.