John Steinbeck, William Styron, Ernest Hemingway, and...Jimmy Buffett? The beachside crooner, margarita aficionado, and lover of manatees joins the short list of literary heavyweights who have topped both the nonfiction and fiction New York Times best-seller lists during their careers. With 515,000 in print and eight pressruns, A Pirate Looks at Fifty is perched at No. 1, joining Buffett's 1992 chart-topping fiction effort Where Is Joe Merchant? in the annals of publishing history. Now parrotheads really have something to crow about.

FICTION

WEEKS ON LIST

1 I KNOW THIS MUCH IS TRUE Wally Lamb, ReganBooks, $27.50 5 2 SUMMER SISTERS Judy Blume, Delacorte, $21.95 8 3 BRIDGET JONES'S DIARY Helen Fielding, Viking, $22.95 5 4 THE KLONE AND I Danielle Steel, Delacorte, $17.95 3 5 MESSAGE IN A BOTTLE Nicholas Sparks, Warner, $20 13 6 A WIDOW FOR ONE YEAR John Irving, Random House, $27.95 10 7 THE STREET LAWYER John Grisham, Doubleday, $27.95 22 8 UNSPEAKABLE Sandra Brown, Warner, $25 4 9 LOW COUNTRY Anne Rivers Siddons, HarperCollins, $25 1 10 MEMOIRS OF A GEISHA Arthur Golden, Knopf, $25 32

NONFICTION

1 A PIRATE LOOKS AT FIFTY Jimmy Buffett, Random House, $24.95 5 2 SUGAR BUSTERS! H. Leighton Steward, Morrison C. Bethea, M.D., Sam S. Andrews, M.D., and Luis A. Balart, M.D., Ballantine, $22 10 3 TUESDAYS WITH MORRIE Mitch Albom, Doubleday, $19.95 36 4 THE 9 STEPS TO FINANCIAL FREEDOM Suze Orman, Crown, $23 16 5 A MONK SWIMMING Malachy McCourt, Hyperion, $23.95 5 6 ANGELA'S ASHES Frank McCourt, Scribner, $24 93 7 A WALK IN THE WOODS Bill Bryson, Broadway, $25 5 8 MARS AND VENUS STARTING OVER John Gray, Ph.D., HarperCollins, $25 1 9 THE MILLIONAIRE NEXT DOOR Thomas J. Stanley and William D. Danko, Longstreet, $22 50 10 TITAN: THE LIFE OF JOHN D. ROCKEFELLER, SR. Ron Chernow, Random House, $30 7

MASS MARKET PAPERBACKS

1 UNNATURAL EXPOSURE Patricia Cornwell, Berkley, $7.99 4 2 SHE'S COME UNDONE Wally Lamb, Pocket, $7.99 8 3 DR. ATKINS' NEW DIET REVOLUTION Robert C. Atkins, M.D., Avon, $6.50 76 4 THE PERFECT STORM Sebastian Junger, HarperPaperbacks, $6.99 5 5 FAT TUESDAY Sandra Brown, Warner Vision, $7.99 6 6 INTO THIN AIR Jon Krakauer, Anchor, $7.99 13 7 THE ANGEL OF DARKNESS Caleb Carr, Ballantine, $7.99 5 8 THE HORSE WHISPERER Nicholas Evans, Dell, $7.50 38 9 THE NOTEBOOK Nicholas Sparks, Warner, $5.99 26 10 PRETEND YOU DON'T SEE HER Mary Higgins Clark, Pocket, $7.99 13

SOURCE: PUBLISHERS WEEKLY