‘Clueless’

Effervescent, unflappable and supremely pleased with herself, Cher (delightfully played by Alicia Silverstone, left with Stacey Dash) is the comic centerpiece of “Clueless,� a wickedly funny 1995 teen-age farce from writer-director Amy Heckerling that, like its heroine, turns out to have more to it than anyone could anticipate. “Clueless� is a shrewd modern reworking of some of the themes and plot lines of Jane Austen’s beloved “Emma.� (HBO Saturday at 8 p.m.).