Clay Aiken and Kelly Clarkson's Independent Tour in 2004 was the first concert we ever attended, and seeing Clay live for the first time was just unbelievable.  He seemed so happy that night and was having a lot of fun, so that made it even more enjoyable.  He is great at connecting to the audience and making them a part of the show.  Even though I have been to many more Clay concerts since this one, it is still special because it was the first.