Extreme Ghostbusters is an animated television series and sequel/spin-off of the animated series The Real Ghostbusters, which in turn is a spin-off from the live-action comedy film Ghostbusters. The series originally aired in the fall of 1997, and features a team of younger university-level Ghostbusters who are led by veteran Ghostbuster Egon Spengler. The premise is similar to the plot of Ghostbusters II.

"Ghostbusters" is a song recorded by Ray Parker Jr. as the theme to the film of the same name starring Bill Murray and Dan Aykroyd. It hit number one on the Billboard Hot 100 on August 11 in 1984, and stayed there for three weeks.

An instrumental version of the song serves as the theme song for the spin-off cartoon series The Real Ghostbusters.

Parker Jr. was approached by the film's producers to create a theme song for the film. Unfortunately, he only had a few days to do so and the film's title seemed impossible to include in any lyrics. However, when watching television late at night, Parker Jr. saw a cheap commercial for a local service that reminded him that the film had a similar commercial featured for the fictional business. This inspired him to write the song as a pseudo-advertising jingle that the business could have commissioned as a promotion.

Parker was later the defendant in a copyright-infringement lawsuit which claimed "Ghostbusters" was too similar in musical structure to "I Want a New Drug", written and performed by Huey Lewis & the News (more specifically, the guitar riff which runs through the song). "I Want a New Drug" was a U.S. top ten hit earlier the same year. The two parties settled out of court, with Parker paying Lewis a settlement.

In later years, AutoNation adopted the theme for their advertising campaign.

Ghostbusters is a science-fantasy comedy film franchise created in 1984. The two films center around a group of eccentric New York City parapsychologists who investigate and capture ghosts for a living. The first film was simply titled Ghostbusters, and was released on June 8, 1984 by Columbia Pictures. Both films became a pop culture phenomenon, leading to a sequel, three animated television shows, a novel, a comic series, various video games, a large number of action figures and other merchandise.