FREEZE FRAMES

ADVENTURES IN BABYSITTING - They aren't supposed to leave the house, but a friend needs help. So the sitter and the kids head for the big city, where they get mixed up with gangsters, blues singers, and other folks they never met in the suburbs. The jokes and situations are aimed squarely at teen-age audiences, as in so many summer movies. The story has explosions of hilarity, though, especially when our heroes find themselves on the stage of a Chicago blues bar. Chris Columbus, in his first outing as a director, keeps the action smooth and speedy. (Rated PG-13) FULL METAL JACKET - Stanley Kubrick views the Vietnam war through the eyes of a young Marine recruit. The first portion takes place in boot camp, dominated by a drill sergeant whose filthy, dehumanized language prefigures a climactic burst of violence. The scene then changes to the Vietnamese city of Hue during the Tet offensive, where the recruit ends up fighting a blind battle with a lost and leaderless patrol. Kubrick uses these situations to explore the ``duality'' of human beings and their contradictory urges to destroy and to heal. He also sets up a duality of his own, by filming dark and explosive material in a fluid, elegant cinematic style. (Rated R) HALLOWEENIE - Trivial documentary about an outrageous Halloween costume. Directed by Bill Daughton. (Not rated) INNERSPACE - Scientists shrink a researcher to microscopic size and get ready to inject him into a rabbit. But villains mess up the experiment, and our hero finds himself wandering through the innards of a stranger who's never heard of all this. The action is lively and sometimes funny. But the story is far from original, and the adventure wears thin long before it's over. The director, Joe Dante, doesn't quite recapture the sense of antic pop-culture fun that spiced the best parts of ``Explorers,'' his last science-fiction adventure. (Rated PG) SPACEBALLS - Mel Brooks parodies the ``Star Wars'' saga. Rick Moranis is funny as the Darth Vader character, and Brooks has some amusing moments as Yogurt, a Ben Kenobi-like wise man who satirizes Hollywood's money-mad mentality. But most of the action is incredibly stupid and crude, even by Brooks's deliriously vulgar standard. Where are the Jedi when we need them? (Rated PG) STRAIGHT TO HELL - Bad guys stash their loot, and themselves, in a squalid middle-of-nowhere town. This appears to be a parody of Italian westerns, but it's aggressively not funny. Directed by Alex Cox, who paradoxically gives the pointless action more visual interest than you'll find in his previous pictures, the overpraised ``Sid and Nancy'' and ``Repo Man.'' (Rated R) A VIRUS RESPECTS NO MORALS - Extremely dark comedy about a homosexual bathhouse owner facing the AIDS crisis. The audacious Rosa von Praunheim directed this West German production, which hides real anguish over AIDS behind a scruffy and campy surface. (Not rated)

RATINGS: Films with ratings other than G may contain varying degrees of vulgar language, nudity, sex, and violence.