The concerts you have been to thread inspired this. Only realistic posts though, IE I couldn't say The Beatles because they broke up long before I was born.
Here's a short list of mine:
Nirvana
At The Drive In
Refused
Sepultura w/Max (if they reunite, I will fly to Brazil to see them if I have to.)
Soundgarden
The Libertines
Pink Floyd
Tha Alkaholiks
Bookmarks