Prime Time Preliminary Tuesday Ratings

Despite the benefit of a huge lead-in from the season finale of "The Biggest Loser: Families," "Momma's Boys" notched a mediocre 2.5 rating/7 share among adults 18-49. About 6 million viewers tuned in Tuesday night, according to preliminary Nielsen data. "Momma's Boys" finished a distant second behind an original episode of CBS' "Without a Trace" (3.2/9, 14.9 million).

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	8	9	9:30	10
2.0 / 5	A Charlie Brown Christmas 2.9 / 8 8.3 mil	According to Jim 1.8 / 5 5.1 mil	According to Jim 1.6 / 4 4.5 mil	Eli Stone 1.5 / 4 5 mil
3.8 / 10	NCIS 3.9 / 11 19.9 mil	The Mentalist 4.2 / 11 19.3 mil		Without a Trace 3.2 / 9 14.5 mil
2.2 / 6	House 2.4 / 7 6.4 mil	Fringe 1.9 / 5 4.9 mil		No Programming
3.8 / 10	The Biggest Loser: Families 4.5 / 12 11.7 mil			Momma's Boys 2.5 / 7 6.1 mil
0.4 / 1	90210 0.5 / 1 1.1 mil	Privileged 0.4 / 1 1 mil		No Programming

Source: Nielsen Media Research

*Ratings are specified in the 18- to 49-year-old demographic and viewership in P2+.

A note about ratings: Ratings are expressed as percentages of Nielsen's estimated 112.8 million U.S. television households. The first number, the rating, is a percentage of households tuned into a specific program at a specific time.

The second number, the share, is a percentage of households with televisions in use tuned into that same program. For example, if a show obtains a 10.2/16, this means that 10.2% of all U.S. households tuned into the program at some point during the broadcast. Meanwhile, 16% of all households watching television during the time period viewed the program at some point. Ratings are broken down further by demographic, as networks sell advertising time based on the makeup of the audience.