Based on sales for the week ending December 11, 2011

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

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

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

19. The Time of Our Lives
Tom Brokaw, Random House, $26, 9781400064588

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

21. Bossypants
Tina Fey, Reagan Arthur, $26.99, 9780316056861

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

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

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

25. Rome
Robert Hughes, Knopf, $35, 9780307268440

26. The Eighty-Dollar Champion
Elizabeth Letts, Ballantine, $26, 9780345521088

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

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

29. Being George Washington
Glenn Beck, Threshold Editions, $26, 9781451659269

30. One on One
John Feinstein, Little Brown, $27.99, 9780316079044

31. Jacqueline Kennedy
Caroline Kennedy, Michael Beschloss, Hyperion, $60, 9781401324254

32. The New New Rules
Bill Maher, Blue Rider, $26.95, 9780399158414

33. Seriously... I'm Kidding
Ellen DeGeneres, Grand Central, $26.99, 9780446585026

34. The 50 Funniest American Writers
Andy Borowitz (Ed.), Library of America, $27.95, 9781598531077

35. Midnight Rising
Tony Horwitz, Henry Holt, $29, 9780805091533

36. 1493
Charles C. Mann, Knopf, $30.50, 9780307265722

37. Just My Type
Simon Garfield, Gotham, $27.50, 9781592406524

38. Inferno
Max Hastings, Knopf, $35, 9780307273598

39. Throw Them All Out
Peter Schweizer, Houghton Mifflin Harcourt, $26, 9780547573144

40. Here Comes Trouble
Michael Moore, Grand Central, $26.99, 9780446532242

41. Pacific Crucible
Ian W. Toll, Norton, $35, 9780393068139

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

43. Following Atticus
Tom Ryan, Morrow, $25.99, 9780061997105

44. Hemingway's Boat
Paul Hendrickson, Knopf, $30, 9781400041626

45. No Higher Honor
Condoleezza Rice, Crown, $35, 9780307587862

46. Cocktail Hour Under the Tree of Forgetfulness
Alexandra Fuller, Penguin Press, $25.95, 9781594202995

47. Seeing Trees
Nancy R. Hugo, Timber Press, $29.95, 9781604692198

48. Extra Virginity
Tom Mueller, Norton, $25.95, 9780393070217

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

50. Gabby
Gabrielle Giffords, Mark Kelly, Scribner, $26.99, 9781451661064