Funnyman Tommy Tiernan is back on Saturday 4th January for a fourth series of his chat-show which sees him interview guests without any preparation or knowledge regarding who they might be.

He's a master of improvisation and quick thinking on his feet, and Tommy Tiernan returns to fly by the seat of his pants with a host of interviewees that both he and his live audience have been kept in the dark on. Running on Saturday nights on RTÉ One, Tommy will be faced with a plethora of faces, and he may or very well may not have a clue as to who they are when he welcomes them to the stage. It’s a format where preparation really is is anything but key.