talk show

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A television or radio show in which noted people, such as authorities in a particular field, participate in discussions or are interviewed and often answer questions from viewers or listeners.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun broadcasting A television or radio programme in which a host converses on various topics with guests who may be experts, celebrities, or members of the listening or viewing audience.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a program during which well-known people discuss a topic or answer questions telephoned in by the audience