A list of the top 20 prime-time programs in the Nielsen ratings for March 15-21

Top 20 prime-time TV programs for March 15-21

Prime-time viewership numbers compiled by the Nielsen Co. for March 15-21. Listings include the week’s ranking and viewership.

1. “American Idol” (Tuesday), Fox, 22.91 million.

2. “American Idol” (Wednesday), Fox, 20,51 million.

3. “NCIS,” CBS, 18 million.

4. “NCIS: Los Angeles,” CBS, 15.1 million.

5. “Undercover Boss,” CBS, 14.47 million.

6. “The Good Wife,” CBS, 13.4 million.

7. “60 Minutes,” CBS, 13.28 million.

8. “Two and a Half Men,” CBS, 12.7 million.

9. “Amazing Race 16,” CBS, 11.99 million.

10. “The Big Bang Theory,” CBS, 11.67 million.

11. “House,” Fox, 11.37 million.

12. “Desperate Housewives,” ABC, 10.84 million.

13. NCAA Basketball Championships (Saturday, 8:15 p.m.), CBS, 10.29 million.

14. NCAA Basketball Championships (Thursday, 9:59 p.m.), CBS, 10.11 million.

15. “Law & Order: SVU,” NBC, 9.65 million.

16. “Cold Case,” CBS, 9.43 million.

17. “24,” Fox, 9.01 million.

18. “CSI: Miami,” CBS, 8.96 million.

19. NCAA Basketball Championships (Thursday, 7 p.m.), CBS, 8.9 million.

20. NCAA Basketball Championships (Thursday, 10:10 p.m.), CBS, 8.88 million.

ABC is owned by The Walt Disney Co.; CBS is a division of CBS Corp.; Fox is a unit of News Corp.; NBC is owned by General Electric Co.