Possibly the least offensive entry on this list, 'Clueless' still makes the cut because it's a tonally nightmarish, bubblegum-infused adaptation that fails to capture the feel of the film entirely.
Rachel Blanchard replaces Alicia Silverstone and Doug Sheehan replaces Dan Hedaya as her father. Stacey Dash, Donald Faison, Twink Caplan, Julie Brown, Wallace Shawn, and Elisa Donovan all reprise their roles from the film, and Amy Heckerling even wrote and directed a few episodes for the first season. The show ran for one season on ABC before moving to UPN for its final two seasons, which is where things became even more problematic. Shawn, Caplan, and Brown were written out of the show. The character of Tai only shows up in three episodes overall.
It disregards the plot of the film almost entirely, removing the romance between Cher and Josh before writing Josh out completely. The show devolved into a typical sitcom, spruced up with cute outfits and hip, superficial lingo. Like Rachel Blanchard's portrayal of Cher, the show only superficially resembled its predecessor.