Actions that mirror the state of mind of the film's hero, Grady Tripp. Played by Michael Douglas in a calculated reversal of his standard lethal-lothario persona, Grady is overweight and unshaven, with a bad haircut, glasses, and a stocking cap; he looks at times like the idiot brother played by Billy Bob Thornton in A Simple Plan. Tenuously tenured at a Pittsburgh university, Grady hasn't done anything but smoke dope and pursue women in the seven years since he won an award for a novel he wrote. His only hope is a work in progress, a novel (titled Wonder Boys in the book, though this isn't mentioned in the film) that he has no trouble writing, only finishing.

Grady's routine of conducting workshops, cheating on his wife, filling boxes with typescript, and inhaling comes to a halt when he wakes up to find his wife gone and long-term mistress Sara (a buttoned-up Francis McDormand) -- who's also the university's chancellor and the wife of Walter (a professorial Richard Thomas), head of the English department and Grady's boss -- pregnant. Adding to the turmoil is the arrival, drug cache and transvestite in tow, of Terry Crabtree (a subdued Robert Downey Jr.), Grady's editor, who needs a salable manuscript to save his own career. And so, somehow, Grady must put aside personal chaos and finish his book.

Had Boys focused on Grady's attempts to do so, it would have ventured into deadly terrain -- it's tricky enough when a novelist writes a novel about a novelist writing a novel (Chabon's success is proportional to how often he changes the subject), but in the brutally literal medium of film, that much subjectivity puts people to sleep. Neither were the novel's more evanescent virtues of language, tone, and bewildered irony, which keep its sometimes contrived and ultimately inconsequential incidents afloat, ever likely to survive transplantation to the screen.

But Hanson knows his strengths and limitations -- rather than dwelling on the horror vacuum of writing, the heart of Grady's misery, he sums it up in one brief, hilarious visual joke involving a page number. As for the tossaway episodes that make up Grady's misadventures -- an incident involving a dead dog, the theft of Marilyn Monroe's wedding jacket -- the director breezes through them with grace and off-kilter timing, then stores them for safekeeping somewhere in the trunk of Grady's gas-guzzling vintage convertible. Like Grady in his car (and like the soundtrack, which is heavy on such '60s survivors as Bob Dylan, Tom Rush, and Buffalo Springfield), the movie tools about on the byways of regret, randiness, and jaundiced optimism.

Mostly, though, it's the cast that brings Wonder Boys to life. As Grady, Douglas achieves the hapless melancholy and droopy-drawered dignity that his character evinced in Falling Down, this time without resorting to heavy weaponry. He also provides the right degree of stoned insight, injecting lines like "I just had my hood jumped on" with the proper measure of tragic absurdity. As Grady's comrade and nemesis, Downey embodies the persistence of self-destructive desire in the face of rueful awareness. And Tobey Maguire puts in his best performance to date as the film's real wonder boy, James Leer, a student whose literary gifts are matched only by his lack of experience. That's where Grady comes in, and the pair offer a variation of the male bonding in American Beauty -- here it's the disillusioned middle-aged loser who provides the kid with the dope instead of the other way around. (A gun also figures prominently in the plot, though not so melodramatically.)

An exercise in taking it easy, Wonder Boys stumbles when it tries too hard -- a subplot involving an invented character named Vernon Hardapple is a strain (but it's even more so in the novel), and the just-say-no dénouement is a copout. Be that as it may, Hanson's film is an agreeable way to pass the time until the next masterpiece comes along.