Last month or so there has been great enjoyment in Ireland with people trying to pronounce Domhnall Gleeson's name, he of Star Wars and The Revenant fame. Poor Leonardo diCaprio struggled with it, as did others.
I've heard it pronounced as "Donnell," basically. I probably got that from the bonus features for Ex Machina. It was weird to see Gleeson play the nice guy and Oscar Isaac the villain in that one and then see them play the opposite roles so well in The Force Awakens. It's hard to believe they're the same people.