1. "Shopaholic & Baby," by Sophie Kinsella (Dial, $24). Becky is pregnant, and the obstetrician turns out to be her husband's ex-girlfriend.
2. "Step on a Crack," by James Patterson and Michael Ledwidge (Little, Brown, $27.99). A detective raising 10 children must rescue 34 high-level hostages.
3. "Innocent in Death," by J. D. Robb (Putnam, $25.95). Lt. Eve Dallas investigates the murder of an apparently inoffensive private-school history teacher; by Nora Roberts, writing pseudonymously.
4. "Sisters," by Danielle Steel (Delacorte, $27). After a family tragedy, four sisters with very different lives decide to share a Manhattan brownstone.
5. "The Watchman," by Robert Crais (Simon & Schuster, $25.95). A former Los Angeles police officer becomes the bodyguard of a troubled heiress marked for death.
1. "In an Instant," by Lee and Bob Woodruff (Random House, $25.95). The aftermath of the ABC co-anchor's traumatic brain injury in Iraq in 2006.
2. "The Audacity of Hope," by Barack Obama (Crown, $25). The Illinois junior senator proposes that Americans move beyond their political divisions.
3. "Somebody's Gotta Say It," by Neal Boortz (HC/HarperCollins, $25.95). A radio talk-show host discusses government, poverty, prayer in the schools, race relations, gun control and other topics.
4. "A Long Way Gone," by Ishmael Beah (Sarah Crichton/Farrar, Straus & Giroux, $22). A former child soldier from Sierra Leone describes his return to humanity.
5. "Infidel," by Ayaan Hirsi Ali (Free Press, $26). A memoir by the Somali-born advocate for Muslim immigrant women, once a member of the Dutch Parliament, who has been threatened with death.