WordNet (r) 3.0 (2006):

talk show
    n 1: a program during which well-known people discuss a topic or
         answer questions telephoned in by the audience; "in England
         they call a talk show a chat show" [syn: talk show, chat
         show]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "talk show":
   Grand Guignol, Passion play, Tom show, antimasque,
   audience success, ballet, bomb, broadcast drama, burlesque show,
   charade, cliff hanger, closet drama, comedy drama,
   critical success, daytime serial, dialogue, documentary drama,
   drama, dramalogue, dramatic play, dramatic series, duodrama,
   duologue, epic theater, experimental theater, extravaganza,
   failure, flop, gasser, giveaway, happening, hit, hit show,
   improvisational drama, legitimate drama, masque, melodrama,
   minstrel show, miracle, miracle play, monodrama, monologue,
   morality, morality play, music drama, musical revue, mystery,
   mystery play, opera, pageant, panel show, pantomime, pastoral,
   pastoral drama, piece, play, playlet, problem play, psychodrama,
   quiz show, radio drama, review, revue, sensational play, serial,
   show, sitcom, situation comedy, sketch, skit, soap, soap opera,
   sociodrama, spectacle, stage play, stage show, straight drama,
   success, suspense drama, tableau, tableau vivant, teleplay,
   television drama, television play, theater of cruelty,
   total theater, variety show, vaudeville, vaudeville show, vehicle,
   word-of-mouth success, work