Back to the Future star Michael J Fox will lead yet another brilliant Late Late Show line-up tonight.
While he won't be speeding into the studio at 88 miles per hour, Fox will be on to chat with Ryan about his legacy, the work of his Parkinson's foundation, and his thoughts on turning 60.
Mary Robinson, who historically became Ireland's first female President 30 years ago, will reflect on her ground-breaking achievement.
How Joe Biden's election victory could make a difference and the Covid effect on fighting climate change will also be on the agenda when Ms Robinson joins Ryan.
Irish Women in Harmony stars, including Ruth Anne, Aimée, Moya Brennan, Sibeal, Laoise and Erica Cody, will perform their latest single 'Together at Christmas', which is being released in aid of the ISPCC.
The Fleming's, who have gone viral on social media with their epic dance moves, will chat about surviving lockdown at home in Kerry, and how they helped lift the spirits of the nation.
Dublin rapper Malaki will be in studio to perform his unique version of Van Morrison's Someone Like You.
And during the show, Ryan will take a look at a stunning collection of photos from Old Ireland in Colour.
The fantastic book brings the country's history to life by adding colour to black and white snaps, ranging from the 1870s to 1960s.
- The Late Late Show will air at 9.35pm on RTE One.
