Julia Roberts and Sean Connery may have won Academy Awards, but that does not mean that they can pull off a believable Irish accent on screen. See who else made the list of worst movie attempts at an Irish accent, including two more Oscar winners.
The Irish accent, judging from some of Hollywood's attempts at it over the years, must surely be one of the most difficult for actors to master. (Unless of course, the actor in question is already Irish. In which case it becomes considerably easier.)