The episode starring Daniel has already been filmed and will be screened in May.
But he won't be the first famous guest star on the long-running show. Daniel will be following in the footsteps of Stephen Fry, Nathan Carter and Francis Brennan who have all appeared on the show.
"I'm a big fan of Ros na Rún and to see it in reality, it's an impressive production," he told RTE's website.
"Growing up in Kincasslagh in Donegal, Irish language was always an integral part of the fabric of the community, so it personally gives me a great sense of pride to work in our native language.
"I'm looking forward to tuning in on Thursday night."