My first was N'sync...I was like 10 and at the time you were cool if you went to that concert lol
I've seen the Blue Man Group a couple of times. They are just simply INCREDIBLE live... If you ever get the chance to one GO! It's amazing
This past September I saw Paramore, Tegan and Sara (<---LOVE), New Found Glory, and a Swedish band called Kadawatha in New Orleans for Honda Civic Tour. Now that was a concert I will remember forever.
I've been looking everyday on Celtic Woman's page for their updated tour dates. The word is is that they're doing ANOTHER North American Tour next year and I absolutely adore them. Tickets are usually about the same as my tuition but its so worth it if I can go