Based on sales for the week ending May 8, 2011

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

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

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

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

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

21. 1861
Adam Goodheart, Knopf, $28.95, 9781400040155

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

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

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

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

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

27. To End All Wars
Adam Hochschild, Houghton Mifflin Harcourt, $28, 9780618758289

28. Good Stuff
Jennifer Grant, Knopf, $24.95, 9780307267108

29. Mom
Dave Isay (Ed.), Penguin Press, $21.95, 9781594202612

30. From This Moment on
Shania Twain, Atria, $26.99, 9781451620740

31. Barefoot Contessa How Easy Is That?
Ina Garten, Clarkson Potter, $35, 9780307238764

32. A Covert Affair
Jennet Conant, S&S, $28, 9781439163528

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

34. Physics of the Future
Michio Kaku, Doubleday, $28.95, 9780385530804

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

36. Reading My Father
Alexandra Styron, Scribner, $25, 9781416591795

37. Robert Redford
Michael Feeney Callan, Knopf, $28.95, 9780679450559

38. The 4-Hour Body
Timothy Ferriss, Crown, $27, 9780307463630

39. Fire Season
Philip Connors, Ecco, $24.99, 9780061859366

40. The Dressmaker of Khair Khana
Gayle Tzemach Lemmon, Harper, $24.99, 9780061732379

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

42. A Band of Misfits
Andrew Baggarly, Triumph, $19.95, 9781600785986

43. All My Friends Are Dead
Avery Monsen, Jory John, Chronicle, $9.95, 9780811874557

44. Autobiography of Mark Twain
Mark Twain, University of California Press, $34.95, 9780520267190

45. The Information
James Gleick, Pantheon, $29.95, 9780375423727

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

47. The Reading Promise
Alice Ozma, Grand Central, $24.99, 9780446583770

48. Get Rich Click!
Marc Ostrofsky, Multimedia Publishing Corp., $19.95, 9780982769607

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

50. This Life Is in Your Hands
Melissa Coleman, Harper, $25.99, 9780061958328