So I met the non-american-non-irish student in my suite: he's German, and his name is Christian :p
The other amusing detail is that he has already locked himself out XD
Anyway, in the meantime, watch this and its sequels:
http://www.youtube.com/watch?v=mygvHD4B1cY I was there; that's not my movie, but I was at Bunratty Castle the other day. Fascinating trip.