By Belinda Luscombe

A CHIP OFF THE OLD FISH

"Not one person in show business knows what works, and that's why you keep doing it," says JAMIE LEE CURTIS. On the other hand, most people in show business think that what works once usually works again, so Curtis is reuniting with her A Fish Called Wanda castmates, KEVIN KLINE, MICHAEL PALIN and JOHN CLEESE, for a new film, Fierce Creatures. The plot follows the adventures of zookeepers who match wits with a crassly commercial tycoon. Wanda, eaten in the last film, would be proud.

DOOGIE HOWSER, STEP ASIDE

Worried that your doctors seem to keep getting younger? Meet BALAMURALI AMBATI. At 17, he just graduated from Mount Sinai School of Medicine, which claims he's the youngest physician ever. Ambati moved from India to the U.S. with his family when he was three and graduated from New York University (magna cum laude, natch) at 13. Unlike TV's Doogie Howser, however, Ambati doesn't look young. "At [medical school] orientation, someone mentioned that the youngest member of the class was 14," he says. "People were asking me, 'Have you seen the 14-year-old?'" After he's finished studying, he plans to practice in the U.S. and India.

SEEN & HEARD

Andre Agassi showed a bit of his pre-Brooke Shields form at the quarterfinals of the German Open in Hamburg. Having lost to Spain's Sergi Bruguera on the court where Monica Seles was stabbed in April 1993, the top-seeded player made an unprintable remark to a spectator who complained about the quality of the match. "Are you going to get a knife and chase me now?" Agassi then asked. He was fined $2,500.

Tupac Shakur isn't the type of guy to let a little thing like incarceration put a crimp in his plans. The rapper, who is the first singer to have an album reach No. 1 on the charts while in the joint, has married his fianca Keisha Morris. Shakur is serving a one-to-four-year sentence for sexual abuse. The honeymoon has been postponed.

FATWA FUN

It sounds like a monologue joke: DAVID LETTERMAN'S ratings have dipped so much that SALMAN RUSHDIE hides out on his show. The novelist, introduced as a man "who doesn't get out very often," handed over the Top 10 List on Friday's Late Show in London. "If you need me, I'll be at the London Plaza Hotel," joked Rushdie, who is in hiding from a death sentence under Islamic law. He later talked with Letterman's mom. "Exchanging recipes," said Dave.