Retiring U.S. Sen. Zell Miller (search), the conservative Georgia Democrat who backed President Bush's re-election, is joining FOX News Channel as a contributor.

Miller, who made a memorable TV appearance when he challenged MSNBC host Chris Matthews to a duel, will be seen on a variety of FOX News programs starting Jan. 6, a Fox spokesman said Tuesday.

"I am excited to be joining Fox News Channel and am eager to contribute to the continuing success of the network," Miller said in a network release.

In a raucous interview last fall on "Hardball with Chris Matthews," Miller, 72, angrily told Matthews, "I wish we lived in the day where you could challenge a person to a duel."

He made the comment when Matthews pressed him on barbs Miller launched during his convention speech against Democratic presidential contender Sen. John F. Kerry.

Miller, a two-term governor of Georgia, was appointed to the Senate in 2000. He's taught history and political science at schools including the University of Georgia.

In November, GOP Rep. Johnny Isakson (search) won an election to succeed Miller.