Based on sales for the week ending January 29, 2012

16. Boomerang
Michael Lewis, Norton, $25.95, 9780393081817

17. Pity the Billionaire
Thomas Frank, Metropolitan, $25, 9780805093698

18. The Swerve
Stephen J. Greenblatt, Norton, $26.95, 9780393064476

19. Guitar Zero
Gary Marcus, Penguin Press, $25.95, 9781594203176

20. Jack Kennedy
Chris Matthews, S&S, $27.50, 9781451635089

21. Then Again
Diane Keaton, Random House, $26, 9781400068784

22. Fairy Tale Interrupted
Rosemarie Terenzio, Gallery, $25, 9781439187678

23. Rin Tin Tin
Susan Orlean, S&S, $26.99, 9781439190135

24. Is Everyone Hanging Out Without Me? (And Other Concerns)
Mindy Kaling, Crown Archetype, $25, 9780307886262

25. Strategic Vision
Zbigniew Brzezinski, Basic Books, $26, 9780465029549

26. A History of the World in 100 Objects
Neil MacGregor, Viking, $45, 9780670022700

27. Plenty
Yotam Ottolenghi, Chronicle, $35, 9781452101248

28. The Psychology of Wealth
Charles Richards, McGraw-Hill, $26, 9780071789295

29. Greedy Bastards
Dylan Ratigan, S&S, $25, 9781451642223

30. God's Jury
Cullen Murphy, Houghton Mifflin Harcourt, $27, 9780618091560

31. Deliciously G-Free
Elisabeth Hasselbeck, Ballantine, $30, 9780345529381

32. New York Diaries: 1609 to 2009
Teresa Carpenter (Ed.), Modern Library, $26, 9780679643326

33. Roger Williams and the Creation of the American Soul
John M. Barry, Viking, $35, 9780670023059

34. Blue Nights
Joan Didion, Knopf, $25, 9780307267672

35. The Greater Journey
David McCullough, S&S, $37.50, 9781416571766

36. Taking People With You
David Novak, Portfolio, $25.95, 9781591844549

37. Through My Eyes
Tim Tebow, Harper, $26.99, 9780062007285

38. Distrust That Particular Flavor
William Gibson, Putnam, $26.95, 9780399158438

39. Guinness World Records 2012
Guinness, $28.95, 9781904994671

40. Destiny of the Republic
Candice Millard, Doubleday, $28.95, 9780385526265

41. Back to Work
Bill Clinton, Knopf, $23.95, 9780307959751

42. Food Rules
Michael Pollan, Maira Kalman (Illus.), Penguin Press, $23.95, 9781594203084

43. Boo: The Life of the World's Cutest Dog
J.H. Lee, Chronicle, $12.95, 9781452103068

44. Jesus Calling
Sarah Young, Integrity , $15.99, 9781591451884

45. That Used to Be Us
Thomas L. Friedman, Michael Mandelbaum, FSG, $28, 9780374288907

46. The World of Downton Abbey
Jessica Fellowes, St. Martin's, $29.99, 9781250006349

47. Glock
Paul Barrett, Crown, $26, 9780307719935

48. Woolgathering
Patti Smith, New Directions, $18.95, 9780811219440

49. One Thousand Gifts
Ann Voskamp, Zondervan, $16.99, 9780310321910

50. The Operators
Michael Hastings, Blue Rider Press, $27.95, 9780399159886