A month and a half ago, Google for some reason had a bug that ranked the Google New Zealand property for a search on Google Ireland. Google fixed the issue a day or so later but now it appears to be back.
A search for google.ie or google.eg both return Google New Zealand in the number one position. If you were wondering, Google.ie is the Google Ireland property and Google.eg is the Google Egypt property.
Colin in the Google Web Search Help thread reported this the first time and then noticed it again today.
I am not sure why Google New Zealand would rank above the others for a search on their names, but it currently is.
Forum discussion at Google Web Search Help.