Ireland is a relatively small place so there's a good chance many people have met some we known Irish people. When I worked in a high profile hotel, I served many celebrities, not just Irish ones. Most of them were as you'd expect them to be. Gabriel Byrne was an absolute gentleman. Graham Norton was also wonderful. Brendan Gleeson was a lovely man.
Gerry Ryan, on the other hand, was awful. He was incredibly rude and obnoxious, and treated staff like they were beneath him. And strongly gave off the whole "do you know who I am?" vibe.
Have you ever met an Irish "celebrity", if so, what was your impression of them?