Piers Morgan Piers Morgan

Piers Morgan knows he has his work cut out for him on ratings-challenged CNN. So as the British host, best known in the U.S. as a judge on America's Got Talent, prepares to take Larry King's timeslot, he's lining up marquee names for his first week of guests after kicking things off with Oprah Winfrey.

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After the daytime talk queen appears on the first Piers Morgan Tonight (debuting Monday, Jan. 17 at 9/8c on CNN), those appearing on Week 1 will be shock jock Howard Stern, former Secretary of State Condoleezza Rice, comedian Ricky Gervais (who's hosting the Golden Globes) and Oscar winner George Clooney.

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CNN also announced Monday that guests who are confirmed for the coming weeks include former New York Mayor Rudy Giuliani, former Massachusetts Gov. and presidential candidate Mitt Romney, Kid Rock, Rod Stewart, Kim and Kourtney Kardashian, and Donald and Melania Trump.