Kildare.ie - I'm from a county in Ireland called Kildare. The site gives info on stuff like tourism, business, education, etc. Not really mind blowing stuff. :p
Dublin City University - I've just started college, doing a degree in Business Studies at D.C.U. It's a pretty kewl place. It's basically a website for the staff and students but there's also a part for visitors and people thinking about coming to study at the college.
Bus Eireann - I use this bus service to go shopping, go to college, etc. You can check out timetables and all that kind of stuff. It's not the most reliable site but it does the job...mostly.