Bob Newhart and Mark Harmon

Four-plus decades after his start in television, Bob Newhart's appearance on NCIS attracted nearly 21 million viewers, just a week after its post-hiatus premiere nabbed a series-high 22 million viewers.

As a result, CBS easily won Tuesday night as the procedural's stalwart ratings carried spin-off NCIS: Los Angeles, which followed at 9/8c, to 17.3 million viewers (down from 18 million last week). At 10, The Good Wife had a solid 11.3 million viewers.

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Against NCIS at 8, the also-rans included a new No Ordinary Family (5.7 million) on ABC and a Glee rerun (4.4 million) on Fox. NBC's The Biggest Loser: Couples grew from 7.8 million to 8.6 million viewers from 8 to 10 p.m., finishing second during both hours, while the apparent series finale of the CW's Life Unexpected  had 1.75 million tuning in — a bittersweet season high.

At 9, ABC's V  had 5.7 million viewers, while NBC's Million Dollar Money Drop had 5.3 million. At 10, Parenthood nabbed 5.2 million viewers, while a special edition of 20/20 attracted 6.2 million, beating last week's episode of Detroit 1-8-7  by 1 million.

Piers Morgan debuts on CNN; 25 years to go?

On cable, Piers Morgan's second night on CNN had an unsurprising drop-off — down to 1.3 million viewers from the 2.1 million who tuned in to Monday's  premiere, which featured Oprah Winfrey. (Howard Stern was Tuesday night's guest.) Nevertheless, CNN pointed out that the show outpaced Fox News Channel in its key demographic of 25-to-54-year-olds.