Colin will be joined by his long time friend, Laois's Emma Fogarty.
Hollywood actor Colin Farrell will appear on this week's Late Late Show.
Colin will be joined by his long time friend, Laois's Emma Fogarty, who is Ireland's longest surviving person with a severe type of skin condition.
The actor will run the Dublin City Marathon next week to mark Emma's 40th birthday and to raise funds for Debra Ireland.
The charity supports people with that condition, which is called EB or "Butterfly Skin."