Prime-time ratings as compiled by Nielsen Media Research for May 12-18. Top 20 listings include the week's ranking, with rating for the week, season-to-date rankings in parentheses, and total homes.

An ``X'' in parentheses denotes one-time-only presentation. A rating measures the percentage of the nation's 97.0 million TV homes. Each ratings point represents 970,000 households.

1. (1) ``ER,'' NBC, 24.0, 23.3 million homes

2. (2) ``Seinfeld,'' NBC, 20.7, 20.1 million homes

3. (18) ``NBC Sunday Night Movie: The Odyssey Pt. 1,'' NBC, 17.3, 16.8 million homes

4. (4) ``Friends,'' NBC, 16.5, 16.0 million homes

5. (6) ``Fired Up,'' NBC, 16.4, 15.9 million homes

6. ``CBS Wednesday Movie: Mario Puzo's The Last Don Pt. 3,'' 15.3, 14.8 million homes

7. (10) ``Touched by an Angel,'' CBS, 14.8, 14.4 million homes

8. ``CBS Tuesday Movie: Mario Puzo's: The Last Don Pt. 2,'' 14.5, 14.1 million homes

9. (9) ``Home Improvement,'' ABC, 14.2, 13.7 million homes

10. (X) ``Fired Up,'' NBC, 14.0, 13.6 million homes

11. (14) ``CBS Sunday Movie: True Women, Pt. 1 of 2,'' 13.2, 12.8 million homes

12. (20) ``X-Files,'' Fox, 12.7, 12.3 million homes

13. (24) ``Caroline in the City,'' NBC, 12.4, 12.0 million homes

14. ``Chicago Hope,'' CBS, 12.3, 11.9 million homes

14. (26) ``3rd Rock From The Sun,'' 12.3, 11.9 million homes

16. (12) ``20/20,'' ABC, 12.2, 11.8 million homes

17. ``Ellen,'' ABC, 11.9, 11.5 million homes

18. (18) ``Drew Carey Show,'' ABC, 11.7, 11.4 million homes

19. ``Cybill,'' CBS, 11.6, 11.3 million homes

19. (16) ``Frasier,'' NBC, 11.6, 11.3 million homes

___

21. ``60 Minutes,'' CBS, 11.5

22. ``Ink,'' CBS, 11.2

23. (X) ``Kids Say the Darndest Things,'' CBS, 11.1

23. ``NYPD Blue,'' ABC, 11.1

25. (X) ``Caroline in the City,'' NBC, 11.0

26. ``Mad About You,'' NBC, 10.7

27. ``PrimeTime Live,'' ABC, 10.4

28. ``Roseanne,'' ABC, 10.3

28. ``Spin City,'' ABC, 10.3

30. (X) ``Home Improvement,'' ABC, 10.2

31. ``Cosby,'' CBS, 10.1

31. ``Dateline NBC'' (Tuesday), NBC, 10.1

33. ``Law & Order,'' NBC, 9.9

33. ``Walker, Texas Ranger,'' CBS, 9.9

35. (X) ``46th Annual Miss Universe Pageant,'' CBS, 9.8

36. (X) ``All-Star TV Censored Bloopers,'' NBC, 9.5

36. ``NBC Monday Night Movies: Survival On The Mountain,'' NBC, 9.5

36. (X) ``Simpsons,'' Fox, 9.5

39. ``Coach,'' ABC, 9.3

40. (X) ``Video Justice: Crime Caught On Tape,'' Fox, 8.9

41. ``ABC Thursday Night Movie: Columbo: A Trace Of Murder,'' ABC, 8.8

41. ``Dateline NBC'' (Friday), NBC, 8.8

41. ``Early Edition,'' CBS, 8.8

44. ``Murphy Brown,'' CBS, 8.6

44. (X) ``Nanny,'' CBS, 8.6

46. (X) ``World's Scariest Police Shootings,'' Fox, 8.5

47. ``Simpsons,'' Fox, 8.3

48. ``Beverly Hills, 90210,'' Fox, 8.2

48. ``Nanny,'' CBS, 8.2

50. (X) ``When Stunts Go Bad,'' Fox, 8.1

51. ``Homicide: Life on the Street,'' NBC, 8.0

51. ``Step by Step,'' ABC, 8.0

53. ``Sabrina, the Teenage Witch,'' ABC, 7.9

54. ``Promised Land,'' CBS, 7.8

55. ``Dr. Quinn, Medicine Woman,'' CBS, 7.5

56. ``ABC Monday Night Movie: 2000 Leagues Under The Sea, Pt. 2,'' ABC, 7.4

56. (X) ``CBS Thursday Movie Special: Grumpy Old Men,'' CBS, 7.4

58. ``Melrose Place,'' Fox, 7.3

59. ``ABC Sunday Night Movie: Disclosure,'' ABC, 7.2

59. ``Pretender,'' NBC, 7.2

61. ``48 Hours,'' CBS, 7.1

62. (X) ``I Survived A Disaster 2,'' ABC, 7.0

63. (X) ``All-Star TV Mega Bloopers,'' NBC, 6.6

63. ``Millennium,'' Fox, 6.6

65. ``Men Behaving Badly,'' NBC, 6.5

65. ``New York Undercover,'' Fox, 6.5

67. ``Saturday Night At The Movies: Clear And Present Danger,'' ABC, 6.4

68. ``Unsolved Mysteries,'' NBC, 6.2

69. ``America's Most Wanted: America Fights Back,'' Fox, 6.1

69. (X) ``Busted On The Job,'' Fox, 6.1

71. ``Dateline NBC'' (Sunday), NBC, 6.0

72. (X) ``All-Star T.G.I.F. Magic,'' ABC, 5.9

73. ``Wings,'' NBC, 5.7

74. (X) ``3 Stooges Greatest Hits,'' ABC, 5.6

75. ``NewsRadio,'' NBC, 5.4

76. ``Cops 2,'' Fox, 5.3

76. (X) ``Naked Truth,'' NBC, 5.3

78. ``America's Funniest Home Videos,'' ABC, 5.1

79. ``Sliders,'' Fox, 4.9

80. ``Fox Tuesday Movie: Quicksilver Highway,'' Fox, 4.8

81. ``Cops,'' Fox, 4.7

82. (X) ``World's Most Daring Rescue,'' ABC, 4.6

83. ``Jamie Foxx Show,'' WB, 3.3

83. ``Smart Guy,'' WB, 3.3

85. ``Sister, Sister,'' WB, 2.9

87. ``Unhappily Ever After,'' WB, 2.6

88. ``Buffy, The Vampire Slayer,'' WB, 2.5

88. ``7th Heaven,'' WB, 2.5

90. (X) ``Jamie Foxx Show,'' WB, 2.3

91. ``Steve Harvey Show,'' WB, 2.1

92. ``Brotherly Love'' (Sunday), WB, 1.8

93. ``Nick Freno: Licensed to Teach,'' (Sunday) WB, 1.6

93. ``Parent 'Hood,'' WB, 1.6