BEST SELLERS | From Publisher's Weekly

HARDCOVER FICTION
1. "Harry Potter And The Half-Blood Prince" by J.K. Rowling (Scholastic/Levine, $29.99).2. "Lifeguard" by James Patterson and Andrew Gross (Little, Brown, $26.95).3. "The Historian" by Elizabeth Kostova (Little, Brown, $25.95).4. "The Da Vinci Code" by Dan Brown (Doubleday, $24.95).5. "The Interruption of Everything" by Terry McMillan (Viking, $25.95).6. "Undomestic Goddess" by Sophie Kinsella (Dial, $23).7. "No Country for Old Men" by Cormac McCarthy (Knopf, $24.95).8. "Until I Find You" by John Irving (Random House, $27.95).9. "The Mermaid Chair" by Sue Monk Kidd (Viking, $24.95).10. "Double Tap" by Steve Martini (Putnam, $26.95).
HARDCOVER NONFICTION
1. "Natural Cures 'They' Don't Want You to Know About" by Kevin Trudeau (Alliance Publishing, $29.95).2. "The Fair Tax Book" by Neal Boortz and John Linder (Regan Books, $24.95).3. "1776" by David McCullough (Simon & amp; Schuster, $32).4. "The World Is Flat" by Thomas L. Friedman (Farrar, Straus & amp; Giroux, $27.50).5. "Freakonomics" by Steven D. Levitt and Stephen J. Dubner (Morrow, $25.95).6. "Your Best Life Now" by Joel Osteen (Warner Faith, $19.95).7. "100 People Who Are Screwing Up America" by Bernard Goldberg (HarperCollins, $25.95).8. "The Perricone Promise: Look Younger, Live Longer in Three Easy Steps" by Nicholas Perricone, M.D. (Warner, $27.95).9. "Blink" by Malcolm Gladwell (Little, Brown, $25.95).10. "Confessions of a Video Vixen" by Karrine Steffans with Karen Hunter (Amistad, $24.95).
MASS MARKET PAPERBACK
1. "Dean Koontz's Frankenstein: Book 2, City of Night" by Dean Koontz & amp; Ed Gorman (Bantam, $7.99).2. "White Hot" by Sandra Brown (Pocket, $9.95).3. "Night Tales: Nightshade/Night Smoke" by Nora Roberts (Silhouette, $7.99).4. "The Rule of Four" by Ian Caldwell and Dustin Thomason (Dell, $7.99).5. "Angels & amp; Demons" by Dan Brown (Pocket, $7.99).
TRADE
1. "The Kite Runner" by Khaled Hosseini (Riverhead, $14).2. "The Secret Life of Bees" by Sue Monk Kidd (Penguin, $14).3. "The Curious Incident of the Dog in the Night-Time" by Mark Haddon (Vintage, $12).4. "The South Beach Diet" by Arthur Agatston, M.D. (St. Martin's, $14.95).5. "Little Earthquakes" by Jennifer Weiner (Washington Square Press, $14).