"Mark Owen," right, and CBS's Scott Pelley on "60 Minutes" last year.

Anna Faris (right) and Allison Janney as recovering-alcoholic daughter and mother in CBS's Mom.

Katie Couric of "CBS Evening News" poses for a photo in May 2006.

CBS's Eye on the Prize: B.B., who was voted off the show, and Gretchen on Survivor

Paul Reubens in front of CBS studios after a taping of The Late Show with David Letterman

Britain's Prime Minister David Cameron talks with the CBS Late Show host David Letterman during the September 26, 2012 taping in New York in this September 26, 2012 handout photo.

Ingrid Bergman in a special 1961 play on CBS, Twenty Four Hours in a Woman's Life.

President Barack Obama debates with Republican presidential candidate Mitt Romney as moderator Bob Schieffer of CBS looks on at the Keith C. and Elaine Johnson Wold Performing Arts Center at Lynn University in Boca Raton, Fla., on Oct. 22, 2012.

Former Vice President Dick Cheney on CBS's Face the Nation on May 10

Republican vice-presidential candidate Sarah Palin, left, walks by the U.N. with CBS anchor Katie Couric on Sept. 24

Ellen DeGeneres: A new show for a younger-looking CBS

In this Nov. 11, 1970, file photo, Pat Summerall, former New York Giants place kicker and now CBS sportscaster, discusses the field goal explosion in NFL football in New York.

Veteran game show host Bob Barker, with a contestant as she wins a Ford Thunderbird automobile, is shown as he tapes the 6,000th episode of the game show "The Price Is Right" at CBS studios in Los Angeles, February 19, 2004.

In this photo released by CBS, Sen. John McCain speaks to the audience while talking with CBS Late Show host David Letterman on Dec. 11.

Caption that accompanied this image when it appeared in LIFE: "In TV control booth Barbra watches tensely as a song in her new show [a special on CBS] is played back."

Bob Barker poses with a cake at the taping of the 35th season premiere of The Price Is Right at CBS Television studios August 31, 2006 in Los Angeles, California.