Crossword clues for O'Brien is on after him 4 lettersAnswerCluePATSO'Malley and O'Brien.PATSSajak and O'BrienEDNAO'Brien of lettersLENOO'Brien is on after himPATSO'Brien and BooneLENOO'Brien's predecessorLENOHe preceded and followed O'BrienEDNAThe Little Red Chairs novelist O'BrienCOCOTeam __ (O'Brien production company)LENOFuture predecessor of O'BrienPATSO'Brien and RooneyPATSBoone and O'BrienCOCOTV host O'Brien's nicknameLENOPredecessor and successor of O'BrienLENOO'Brien predecessorLENOO'Brien is slated to succeed him in 2009LENOO'Brien predecessor and successorSONAMovsesian who co-hosts "Conan O'Brien Needs a Friend"LENOO'Brien's lead-inCOCOO'Brien's nicknameANDYFormer Conan O'Brien sidekick RichterEDNANovelist Ferber ors O'BrienEARPRole for Hugh O'Brien.EARPFrontier Marshal Wyatt, Hugh O'Brien TV role.KENSFormer NFL quarterbacks Stabler and O'BrienERINSongstress O'Brien.LENOO'Brien is scheduled to succeed himLENOCarson-O'Brien linkLENOLesson #5: O'Brien's predecessorPAAROne of O'Brien's forerunnersCOCOLate-night host O'Brien, to fansLENOO'Brien's predecessor ... and successorCOCONickname for talk show host O'BrienLENOHost before and after O'BrienEDNAFerber or O'BrienLENOO'Brien's successorEDNAMother Ireland writer O'BrienCOCONickname for late-night host O'BrienCOCOLate night host O'Brien, to his fansEDNAThe Country Girls novelist O'BrienCOCOConan O'Brien, to his "teammates"EDNAThe Country Girl author O'BrienLENOJay walking over O'BrienPAARPredecessor of Carson, Leno, O'Brien, Leno again, and, soon, FallonEDNAIrish novelist O'BrienHOSTLeno or O'Brien, e.g.EDNANovelist O'BrienERINMiss O'Brien Moore.EDNAIrish author O'BrienEDNAO'Brien or Ferber