Bob Costas will be a substitute host on CNN's "Larry King Live."

NEW YORK (CNN/Money) - Television host Bob Costas is joining CNN as a substitute anchor for "Larry King Live," the network announced Wednesday.

Costas is already the host of the talk show "Costas Now" as well as "Inside the NFL" for HBO. HBO and CNN are both units of Time Warner Inc. (Research), as is CNN/Money.

"Bob's broad range of interests, his quick wit and his deft interview skills will engage viewers in the best King tradition," said a statement to CNN staff from Jon Klein, president of CNN-U.S. "We are delighted that he will be filling in for Larry from time to time."

"Larry King Live" is CNN's best rated program, with an average of 1.2 million viewers so far in 2005. Costas will be one of a number of substitute anchors for King.

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