Los Angeles , California ( CNN ) -- Comedian Conan O'Brien returns to the late-night television circuit Monday with a much-anticipated new show . Actors Seth Rogen and Lea Michele will be guests on the first episode of `` Conan , '' which airs Monday at 11 p.m . ET on TBS . But the veteran host is keeping mum about a mystery guest -- the winner of an online poll . A guest lineup schedule posted on the new show 's website says : `` You clicked and we listened ! Who will be the poll winner : The Pope ? The Sultan Of Brunei ? Nobel Prize in Chemistry winner Gerhard Ertl ? WATCH AND FIND OUT ! '' There 's one person who probably wo n't be taking the stage in O'Brien 's Burbank , California , studio any time soon : Jay Leno . `` He can come as the musical guest , because that I want to see ... No , there are certain things I will not do , regardless of the price , '' O'Brien said in an interview in the December issue of Playboy . Will Conan O'Brien live up to the 'Conan ' hype ? O'Brien has been off the air since January , when NBC canceled Leno 's primetime hour after disappointing ratings led to an affiliate revolt . NBC paid O'Brien and his staff an estimated $ 40 million to clear the way for Leno to return to the `` Tonight Show '' host chair he handed off to O'Brien last year . The settlement left O'Brien free to launch a competing show after September 1 , 2010 . TBS announced plans to bring O'Brien onboard in April . The cable network is owned by Turner Broadcasting , the same company that owns CNN . The ouster of O'Brien after just seven months on the show stirred his friends and fans -- dubbed Team CoCo -- to launch a variety of anti-NBC protests . Actors Tom Hanks , Jon Hamm and Michael Cera are among the guests slated to appear during the first week of O'Brien 's new show . Musical guests Jack White , Soundgarden and Fistful of Mercy are also scheduled to perform . From 1993 to 2009 , O'Brien hosted `` Late Night with Conan O'Brien '' on NBC . He is also a former editor of the Harvard Lampoon and writer for `` Saturday Night Live '' and `` The Simpsons . ''
He is returning after more than six months off the air . Actor Seth Green is scheduled to appear Monday . The host of rival show Today is unlikely to be a guest on his new show .