Based on sales for the week ending May 22, 2011

16. Cleopatra
Stacy Schiff, Little Brown, $29.99, 9780316001922

17. Moonwalking With Einstein
Joshua Foer, Penguin Press, $26.95, 9781594202292

18. The Best Advice I Ever Got
Katie Couric, Random House, $26, 9780812992779

19. Wicked Bugs
Amy Stewart, Algonquin, $18.95, 9781565129603

20. Stories I Only Tell My Friends
Rob Lowe, Holt, $26, 9780805093292

21. Malcolm X
Manning Marable, Viking, $30, 9780670022205

22. The Emperor of All Maladies
Siddhartha Mukherjee, Scribner, $30, 9781439107959

23. 20 Years Younger
Bob Greene, Little Brown, $27.99, 9780316133784

24. This Is a Book
Demetri Martin, Grand Central, $24.99, 9780446539708

25. My Father's Daughter
Gwyneth Paltrow, Grand Central, $30, 9780446557313

26. The 17 Day Diet
Dr.Mike Moreno, Free Press, $25, 9781451648652

27. It's All about the Bike
Robert Penn, Bloomsbury, $20, 9781608195381

28. Lost in Shangri-La
Mitchell Zuckoff, Harper, $26.99, 9780061988349

29. 1861
Adam Goodheart, Knopf, $28.95, 9781400040155

30. Love Wins
Rob Bell, HarperOne, $22.99, 9780062049643

31. Unfamiliar Fishes
Sarah Vowell, Riverhead, $25.95, 9781594487873

32. William & Catherine
Andrew Morton, St. Martin's Press, $29.99, 9780312643409

33. Stan Musial
George Vecsey, ESPN, $26, 9780345517067

34. Founding Gardeners
Andrea Wulf, Knopf, $30, 9780307269904

35. The Tao of Travel
Paul Theroux, Houghton Mifflin Harcourt, $25, 9780547336916

36. A Jane Austen Education
William Deresiewicz, Penguin Press, $25.95, 9781594202889

37. The Heart and the Fist
Eric Greitens, Houghton Mifflin Harcourt, $27, 9780547424859

38. Sh*t My Dad Says
Justin Halpern, It Books, $15.99, 9780061992704

39. The Pun Also Rises
John Pollack, Gotham, $22.50, 9781592406234

40. Townie
Andre Dubus III, Norton, $25.95, 9780393064667

41. The Wizard of Lies
Diana B. Henriques, Times Books, $30, 9780805091342

42. The Wilder Life
Wendy McClure, Riverhead, $25.95, 9781594487804

43. The Paper Garden
Molly Peacock, Bloomsbury, $30, 9781608195237

44. The Filter Bubble
Eli Pariser, Penguin Press, $25.95, 9781594203008

45. I'm Over All That
Shirley MacLaine, Atria, $22, 9781451607291

46. Outliers
Malcolm Gladwell, Little Brown, $27.99, 9780316017923

47. Battle Hymn of the Tiger Mother
Amy Chua, Penguin Press, $25.95, 9781594202841

48. Guy Fieri Food
Guy Fieri, Morrow, $29.99, 9780061894558

49. My Lucky Life in and Out of Show Business
Dick Van Dyke, Crown, $25, 9780307592231

50. The Origins of Political Order
Francis Fukuyama, FSG, $35, 9780374227340