Differences from the movie
There are several notable inconsistencies in both characters and storylines between the Clueless film and the subsequent television series.
In addition to Rachel Blanchard as Cher, two other major roles were recast for the television series. The role of Cher's father Mel, the part Dan Hedaya originated in the film, was portrayed by Michael Lerner and was again recast with Doug Sheehan by the beginning of the show's second season on the air. By this time, Mel had grown significantly more mellow and humane than the character Hedaya had originated.
David Lascher took over the role of Josh from Paul Rudd in the television series, and the idea of having the character serve as a romantic interest for Cher was almost nonexistent in the television storylines, while it was a major part of the plot of the film version. By the time the show moved to UPN, Josh was written out of the series entirely. Mr. Hall and Ms. Geist shared the same fate and were also written out of the show by the time it switched networks.
Julie Brown's character in the original film was Coach Millie Stoeger, but in the television series her character's name was changed to Millie Diemer. In addition, Sean Holland, who only had a very minor role in the film as Murray's friend Lawrence, was playing a new character named Sean Holiday. Regardless, Holland's character had significantly more exposure on the television series (and was considered one of its stars) than the character of Tai Frasier (who was also recast with Heather Gottlieb when Brittany Murphy opted not to reprise the role), who only appeared in three episodes of the show, despite being one of the main characters in the film. The character of Christian, played by Justin Walker, was not included in the television series at all. Amy Heckerling, who wrote and directed the film, also wrote and directed several episodes of the show's first season, but did not remain on board with the series subsequently.
Although they did not reprise their original roles of Josh, Travis and Tai, actors Paul Rudd, Breckin Meyer and Brittany Murphy all made guest appearances in one episode each on the series as new characters; Meyer portrayed Harrison in the episode "Do We with Bad Haircuts Not Feel?", Rudd portrayed Sonny in the episode "I Got You, Babe," and Murphy played Jasmine in the episode "Driving Me Crazy." Nicole Bilderback, who played Summer in the movie, returned for three episodes although her character's name was changed to Nicole.
The band Luscious Jackson, who performed the dance song "Here" for the Clueless movie soundtrack, also guest starred on the series in the episode "Sharing Cher" in order to perform their song "Naked Eye."
A few of the show's first-season episodes were broadcast out of order. The first episode to be broadcast was "As If a Girl's Reach Should Exceed Her Grasp" on September 20, 1996. The actual pilot episode, "Don't Stand So Close to Me," aired later on November 1, 1996.