Nielsen Rating's Top 20 for April 12 - April 18

The Nielsen Rating's Top 20 TV Shows for April 12 - April 18. The first number is the ranking, the second number is the season average, then the show name and network. The last number represents the number of viewers in millions. An asterisk * indicates a tie.

Rank	Season rank	Show name	Network	Viewers in millions	Season-to-date average (in millions)
1.	1.	American Idol (Tues.)	Fox	21.0	25.7
2.	2.	American Idol (Wed.)	Fox	20.6	24.5
*	3.	Dancing with the Stars	ABC	20.6	24.5
4.	51.	Glee	Fox	13.7	8.3
*	12.	Two and a Half Men	CBS	13.7	14.9
6.	10.	Dancing Results	ABC	13.6	15.6
7.	14.	The Big Bang Theory	CBS	13.4	14.3
8.	8.	CSI	CBS	13.2	15.8
9.	-	ACM Awards	CBS	13.0	-
10.	34.	Castle	ABC	12.7	10.3
11.	16.	Criminal Minds	CBS	12.4	13.8
12.	18.	Survivor: Heroes	CBS	12.3	13.5
13.	7.	The Mentalist	CBS	11.5	16.8
14.	4.	NCIS	CBS	11.1	19.2
15.	16.	60 Minutes	CBS	11.0	13.6
16.	23.	CSI: NY	CBS	10.9	12.7
17.	21.	CSI: Miami	CBS	10.8	12.7
*	23.	House	Fox	10.8	12.7
19.	15.	Desperate Housewives	ABC	10.6	14.2
20.	28.	NCIS: Los Angeles	CBS	10.4	15.8