Fianna Fáil leader Micheál Martin will be among Brendan O'Connor's guests on the Saturday Night Show on RTÉ One at 9:55pm.
The politician, the production team says, will discuss "life, family and why rebuilding Fianna Fáil matters so much to him".
With the Foo Fighters' 2015 Slane concert announced this week, Slane Castle owner Henry Mountcharles will be talking about next May's event.
Welsh rugby legend Gareth Thomas will discuss his autobiography, while sisters Sarah, Jennie and Grace McGinn will recount their experiences founding the OPSH fashion website.
Music on the night will come from Buffalo Sunn.
