Ghostbusters is a 1984 American science fiction
Science fiction film
Science fiction film is a film genre that uses science fiction: speculative, science-based depictions of phenomena that are not necessarily accepted by mainstream science, such as extraterrestrial life forms, alien worlds, extrasensory perception, and time travel, often along with futuristic...

 comedy film
Comedy film
Comedy film is a genre of film in which the main emphasis is on humour. They are designed to elicit laughter from the audience. Comedies are mostly light-hearted dramas and are made to amuse and entertain the audiences...

 directed by Ivan Reitman
Ivan Reitman
Ivan Reitman, OC is a Canadian film producer and director. He is known for the comedies he has directed and produced, especially in the 1980s and 1990s.He is the owner of The Montecito Picture Company, founded in 2000.-Early life:...

 and written by Dan Aykroyd
Dan Aykroyd
Daniel Edward "Dan" Aykroyd, CM is a Canadian comedian, actor, screenwriter, musician, winemaker and ufologist. He was an original cast member of Saturday Night Live, an originator of The Blues Brothers and Ghostbusters and has had a long career as a film actor and screenwriter.-Early...

 and Harold Ramis
Harold Ramis
Harold Allen Ramis is an American actor, director, and writer, specializing in comedy. His best-known film acting roles are as Egon Spengler in Ghostbusters and Russell Ziskey in Stripes , both of which he also co-wrote...

. The film stars Bill Murray
Bill Murray
William James "Bill" Murray is an American actor and comedian. He first gained national exposure on Saturday Night Live in which he earned an Emmy Award and later went on to star in a number of critically and commercially successful comedic films, including Caddyshack , Ghostbusters , and...

, Dan Aykroyd, Sigourney Weaver
Sigourney Weaver
Sigourney Weaver is an American actress. She is best known for her critically acclaimed role of Ellen Ripley in the four Alien films: Alien, Aliens, Alien 3 and Alien Resurrection, for which she has received worldwide recognition .Other notable roles include Dana...

, Harold Ramis, and Rick Moranis
Rick Moranis
Frederick Allan "Rick" Moranis is a Canadian comedian, actor, musician, and a magician. Moranis came to prominence in the late 1970s on the sketch comedy show Second City Television, and later appeared in several Hollywood films including Strange Brew; Ghostbusters; Spaceballs; Little Shop of...

 and follows three eccentric parapsychologists
The term parapsychology was coined in or around 1889 by philosopher Max Dessoir, and originates from para meaning "alongside", and psychology. The term was adopted by J.B. Rhine in the 1930s as a replacement for the term psychical research...

 (Murray, Aykroyd and Ramis) in New York City, who start a ghost catching business. Ghostbusters was released in the United States on June 8, 1984 and like several films of the era, teamed Aykroyd and/or Ramis with Murray.

Rarely has a movie this expensive provided so many quotable lines.

Roger Ebert

They're Here To Save The World.

Coming To Save The World This Summer.

We're Ready To Believe You.

Who ya gonna call? Ghostbusters!

The supernatural spectacular

They ain't afraid of no ghost.

The world's most successful comedy