THE CARE BEARS' ADVENTURE IN WONDERLAND - To help the Care Bears save Wonderland from a bad wizard, an ordinary girl masquerades as a princess. The animated action holds few surprises for grown-ups, but the cute characters and fetching designs should enthrall young children. John Sebastian did the songs. Raymond Jafelice was the director. (Rated G) EAT THE PEACH - A gentle, bittersweet Irish comedy about two unemployed young men who, inspired by an old Elvis Presley movie, build a carnival-type ``great wall of death'' in the backyard and prepare for fame and fortune via motorcycle stunts. The plot falters occasionally, but what really matters is the film's compassionate portrait of losers who refuse to lose. Sensitively directed by Peter Ormrod. (Not rated) LIVING ON TOKYO TIME - To help her get a ``green card'' and stay in the United States, a quiet young man marries a Japanese immigrant. Then he starts falling in love with her, but she finds him sort of dull and can't reciprocate. The acting is deliciously subtle in this gentle, surprisingly touching comedy. Directed by Japanese-American filmmaker Steven Okazaki. (Not rated) THE LOST BOYS - Some of today's teen-agers enjoy looking like refugees from horror movies, and this fantasy suggests that a few of them might really be vampires. Southern California isn't exactly Transylvania, but the settings are effectively spooky. And there's some amusing satire on the horror-pic genre. The plot is weak, though, and the climax is lurid. Joel Schumacher was the director. (Rated R) NADINE - She stumbles on a scheme concocted by a greedy crook, and her husband wants to cash in on it. The proceedings are flimsy but likable, except for a few bursts of violence. Kim Basinger and Jeff Bridges give terrific comic performances, supported by Rip Torn at his most sardonic. The details of urban Texas life in 1954 are glowingly captured by cinematographer Nestor Almendros. Written and directed by Robert Benton. (Rated PG) NO WAY OUT - A young go-getter takes a job with the secretary of defense, then learns that his new girlfriend is the boss's mistress. When she dies at the official's hand, the new assistant races to expose an elaborate cover-up and save his own life. There are too many perfunctory chases, and the early scenes are so crowded with sex that you can guess the screenwriter's plan to write the female partner out of the story. Otherwise, the action is tight and suspenseful, and the plot culminates in the most astounding last-minute switch of the decade. Kevin Costner and Gene Hackman shine as the main characters, and Will Patton leads a solid supporting cast. Roger Donaldson directed. (Rated R) THE WHISTLE BLOWER - Michael Caine plays an unassuming Briton who starts suspecting his government's integrity when his son, a Russian-language expert, is killed under odd circumstances. The story is intelligently written and sincerely acted, but director Simon Langton fails to build much intellectual or visceral excitement. (Rated PG) RATINGS: Films with ratings other than G may contain varying degrees of vulgar language, nudity, sex, and violence.