Based on sales for the week ending January 22, 2012

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

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

18. Arguably
Christopher Hitchens, Twelve, $30, 9781455502776

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

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

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

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

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

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

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

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

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

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

29. Into the Silence
Wade Davis, Knopf, $32.50, 9780375408892

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

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

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

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

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

35. A Universe from Nothing
Lawrence Krauss, Free Press, $24.99, 9781451624458

36. Spontaneous Happiness
Andrew Weil, Little Brown, $27.99, 9780316129442

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

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

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

40. Dec-41
Craig Shirley, Thomas Nelson, $24.99, 9781595554574

41. The Last Holiday
Gil Scott-Heron, Grove Press, $25, 9780802129017

42. The Dukan Diet
Pierre Dukan, Crown Archetype, $26, 9780307887962

43. Rome: A Cultural, Visual, and Personal History
Robert Hughes, Knopf, $35, 9780307268440

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

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

46. The Alzheimer's Prevention Program
Gary Small, Gigi Vorgan, Workman, $24.95, 9780761165262

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

48. Emotional Equations
Chip Conley, Free Press, $24, 9781451607253

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

50. The Magic Room
Jeffrey Zaslow, Gotham, $27, 9781592406616