I am a Heinz 57! Got more German than anything, but got English and Irish (among others) in the the family. If I ever want a war all I got to do is have all of the different nations come out at the same time! :-)
As for the holiday, I will be at a local watering hole known as Flanagan's. I will not be consuming Green Beer, but will most certainly have a couple Killian's as the day progresses.
And for the question about the green beer, it is nothing but a gimmick to seel the crappy beer. Some places put the food coloring in the good stuf, but the vast majority put it in the cheap stuff. Nothing signifigant about it other than a way to sell some more beer.
I am 50% Irish and 50% Ukrainian... Irish side (mom's) is from County Cork. My wife is also half Irish and knows how to cook a killer corned beef and cabbage and don't forget the Guiness! My only regret in my firefighting career has been not being able to participate in the NYFD St Patrick's Day parade... someday... : )
I'm not too sure how much Irish there really is flowing through my veins. I was always told that there was some though. Unfortunately like a few others have already posted I will be sitting in my EMT-Basic class. Last year was spent at a structure fire so maybe we will get something interesting this year also.