Based on sales for the week ending January 23, 2011

16. Where Men Win Glory
Jon Krakauer, Anchor, $15.95, 9780307386045

17. The World Almanac and Book of Facts 2011
World Almanac, $12.99, 9781600571343

18. The Checklist Manifesto
Atul Gawande, Picador, $15, 9780312430009

19. Infinite City
Rebecca Solnit, Sandow Birk (Illus.), University of California Press, $24.95, 9780520262508

20. The 5 Love Languages
Gary Chapman, Northfield, $14.99, 9780802473158

21. Mennonite in a Little Black Dress
Rhoda Janzen, Holt, $14, 9780805092257

22. What to Expect When You're Expecting
Heidi Murkoff, Sharon Mazel, Workman, $14.95, 9780761148579

23. The Old Farmer's Almanac 2011
Old Farmer's Almanac, $6.95, 9781571985163

24. The Omnivore's Dilemma
Michael Pollan, Penguin , $16, 9780143038580

25. Night
Elie Wiesel, FSG, $9.95, 9780374500016

26. The Four Agreements
Don Miguel Ruiz, Amber-Allen, $12.95, 9781878424310

27. The Power of Now
Eckhart Tolle, New World , $14, 9781577314806

28. Public Enemies
Bernard-Henri Levy, Michel Houellebecq, Random House, $17, 9780812980783

29. Clean
Alejandro Junger, HarperOne, $14.99, 9780061735332

30. Awkward Family Photos
Mike Bender, Doug Chernack, Three Rivers, $15, 9780307592293

31. The Tipping Point
Malcolm Gladwell, Back Bay, $15.99, 9780316346627

32. The Imperial Cruise
James Bradley, Back Bay, $16.99, 9780316014007

33. Half the Sky
Nicholas D. Kristof, Sheryl WuDunn, Vintage, $15.95, 9780307387097

34. Blink
Malcolm Gladwell, Back Bay, $15.99, 9780316010665

35. The Cello Suites
Eric Siblin, Grove, $15.95, 9780802145246

36. Are You There, Vodka? It's Me, Chelsea
Chelsea Handler, Simon Spotlight, $16, 9781416596363

37. Same Kind of Different as Me
Ron Hall, Denver Moore, Thomas Nelson, $14.99, 9780849919107

38. Resilience
Elizabeth Edwards, Broadway, $15, 9780767931564

39. Dewey
Vicki Myron, Grand Central, $13.99, 9780446407427

40. The CalorieKing Calorie, Fat & Carbohydrate Counter 2011
Allan Borushek, Family Health, $8.99, 9781930448339

41. Mountains Beyond Mountains
Tracy Kidder, Random House, $16, 9780812973013

42. Homer's Odyssey
Gwen Cooper, Bantam, $15, 9780385343985

43. The Man Who Loved Books Too Much
Allison Hoover Bartlett, Riverhead, $15, 9781594484810

44. The Devil in the White City
Erik Larson, Vintage, $15.95, 9780375725609

45. A New Earth
Eckhart Tolle, Plume, $14, 9780452289963

46. Traveling With Pomegranates
Sue Monk Kidd, Ann Kidd Taylor, Penguin, $15, 9780143117971

47. Codependent No More
Melody Beattie, Hazelden, $15.95, 9780894864025

48. When Everything Changed
Gail Collins, Back Bay, $15.99, 9780316014045

49. Freakonomics
Steven D. Levitt, Stephen J. Dubner, Harper, $15.99, 9780060731335

50. The Big Burn
Timothy Egan, Mariner, $15.95, 9780547394602