It really is a star-studded lineup on tonight's Late Late Show - we mean actual honest-to-God celebrities.

Ryan will be talking to Hollywood stars Mark Wahlberg, Will Ferrell, Mel Gibson and John Lithgow who are all in town this week for the Irish premiere of their latest movie Daddy’s Home 2.

The interview has already been recorded so we know some of the highlights include Gibson chatting about his friendship with President Michael D Higgins, filming Braveheart in Ireland and his strong ties to Longford. Wahlberg discusses why nothing in life prepares you for being the father of a teenage daughter, losing money to P Diddy on the McGregor/Mayweather fight and meeting the Pope. Ferrell, another son of 'The O’Farrell County', engages in a "Longford-off" with Gibson and admits to being the most embarrassing Dad on stage and Lithgow chats about his award-winning role as Winston Churchill in The Crown.

The four actors also address the ongoing fallout from the allegations against Harvey Weinstein, Kevin Spacey and others in Hollywood.

The great lineup doesn't end there though, comedian Peter Kay will be in studio to talk about everything from being one of the world’s most successful comedians to his love for Bolton and his Irish roots.

Christy Moore himself will also be in studio with a brand new live album, On the Road, featuring performances drawn from the last three years. He'll be chatting about his phenomenal career and the inspiration behind some of the most beloved songs in Irish music while he'll also be performing some favourites.

Actor James Nesbitt will also be on the show telling viewers why he is throwing his support behind Holles Street’s RetCam appeal to raise funds for vital equipment to help save the eyesight of premature babies. He’ll also be chatting about what it was like to come back to the character that made him so famous in the Cold Feet revival.

Finally, comedian Alison Spittle will be chatting about her new TV series Nowhere Fast while there will also be music from Ham Sandwich.

The best Late Late Show lineup of the year? It's up there.