That Bob Newhart guest appearance helped put "The Big Bang Theory" on top last week in Central Florida.

Sheldon Cooper & Co. ranked No. 1 in total viewers, the 18-to-49 age group and the 25-to-54 age group.

In national ratings, "NCIS" was the most-wached program, and "Big Bang" placed second. But "Big Bang" was tops in the 18-to-49 age group.

In Central Florida: the top prime-time programs for the week, their networks and their number of viewers:

1. "The Big Bang Theory," CBS, 273,600 viewers

2. "NCIS," CBS, 249,800

3. "Dancing With the Stars" Monday, ABC, 221,900

4. "Two and a Half Men," CBS, 207,500

5. "American Idol" Thursday, Fox, 197,500

6. "American Idol" Wednesday, Fox, 188,400

7. "NCIS: Los Angeles," CBS, 184,400

8. "The Voice" Monday, NBC, 181,900

9. "Dancing With the Stars" Tuesday, ABC, 178,100

10. "Castle," ABC, 175,600

The top programs in the 18-to-49 age group:

1. "The Big Bang Theory"

2. "The Voice" Monday

3. "2 Broke Girls," CBS

4. "NCIS"

5. "Two and a Half Men"