A list of the top 20 prime-time programs in the Nielsen ratings for April 12-18

Top 20 prime-time TV programs for April 12-18

Prime-time viewership numbers compiled by the Nielsen Co. for April 12-18. Listings include the week’s ranking and viewership.

1. “American Idol” (Wednesday), Fox, 21.02 million.

2. “American Idol” (Tuesday), Fox, 20.64 million.

3. “Dancing With the Stars,” ABC, 20.56 million.

4. “Two and a Half Men,” CBS, 13.71 million.

5. “Glee,” Fox, 13.66 million.

6. “Dancing With the Stars Results,” ABC, 13.6 million.

7. “The Big Bang Theory,” CBS, 13.39 million.

8. “CSI: Crime Scene Investigation,” CBS, 13.19 million.

9. “Academy of Country Music Awards,” CBS, 13.02 million.

10. “Castle,’ ABC, 12.68 million.

11. “Criminal Minds,” CBS, 12.44 million.

12. “Survivor: Heroes & Villains,” CBS, 12.31 million.

13. “The Mentalist,” CBS, 11.45 million.

14. “NCIS,” CBS, 11.1 million.

15. “60 Minutes,” CBS, 10.98 million.

16. “CSI: NY,” CBS, 10.85 million.

17. “House,” Fox, 10.8 million.

18. “CSI: Miami,” CBS, 10.78 million.

19. “Desperate Housewives,” ABC, 10.62 million.

20. “NCIS: Los Angeles,” CBS,, 10.43 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.