“The River Wild” also demonstrates that the right actors can freshen up the oldest formulas (basically, it’s a floating version of “The Desperate Hours,” with a whiff of “Deliverance”). It takes a while to adjust to seeing Streep in an outdoorsy, can-do role. She invests so much emotion in the simplest expository scenes you think she’s overqualified for the job. But once she hits the water, oars in hand, she takes command of the movie. We haven’t seen this sturdy, physical, macho Streep before, yet she seems totally in her element. The fun, and the power, of the movie come from Streep’s newly robust heart: she’s a fiercely convincing matriarchal action hero. It was also clever to cast the boyish Bacon against type as the villain. He’s a plausible, life-size nemesis. It makes sense that Streep’s son would be drawn to his spontaneity, and Streep to his sexuality; Dad’s a dour workaholic. But if the father is a Yuppie cliche, the formidable Strathairn plays him with poker-faced finesse, revealing subtle currents of pride and rage under Dad’s pinched surface. All the actors stay within themselves, and the same could be said of the movie. It knows what it is, doesn’t try to be more, and gets the job done. It must nave been a fiendishly difficult movie to shoot, but the filmmakers make it look easy.

IN 1817, ON THE ENGLISH COUNTRY EState of a nouveau riche couple called the Worralls, an exotic young woman (Phoebe Cates) appears, speaking no recognizable language. Is she a gypsy? A vagrant looking to escape prison? Or is she, as all who fall under her spell are eager to believe, a shipwrecked Oriental princess? Princess Caraboo is based on a true story, but director Michael Austin, who wrote the script with John Wells, knows that the fun of it is as a fable of the prince/pauper/Pygmalion ilk. The tale is at times better than the telling, for Austin’s cinematic style is more prosaic than magical. But there is both ample wit and charm here, and how many movies these days provide either? What Austin does have is a wonderful comic cast at his disposal: Jim Broadbent as the boorish, social-climbing Mr. Worrall and Wendy Hughes as his kindly, gullible wife; Kevin Kline evoking giggles as their snobbish Greek butler, and a hilarious John Lithgow as an Oxford don brought in to verify the mystery woman’s authenticity. Romantic interest is supplied by Stephen Rea as a skeptical journalist determined to get to the bottom of Caraboo’s story. Rea is hardly a conventional heartthrob: he has a face like an unmade bed. The diffident charm that was so effective in “The Crying Game” still works, but his self-effacement is approaching self-parody. Sooner or later the princess captures everyone’s heart sooner or later, you, too, will succumb to “Caraboo’s” modest, sweet enchantments.