In Rob Reiner's witty comedy, Sarah Huttinger (Jennifer Aniston) discovers that her grandmother (Shirley MacLaine) and late mother were the inspirations for the Mrs. Robinson and Elaine characters in "The Graduate." Determined to learn more, Sarah sets about tracking down Beau Burroughs (Kevin Costner), the real-life Benjamin Braddock. In keeping with tradition, she's immediately drawn to him-until she realizes he c ould be her father. 97 min. Standard; Soundtracks: English Dolby Digital 5.1, French Dolby Digital 5.1; Subtitles: English, French, Spanish; theatrical trailer.