Namie's concert is the best concert to come out this year. Not only is she a great vocalist, she's also a great entertainer/dancer. She's one of the few people who can sing AND dance at the same time. Her vocals are sometimes off, this mostly occurs at the end of the concert, after she's been singing and dancing for over an hour.
Anyways, read this for more info on her (i collaborated in its writing =D!):
http://en.wikipedia.org/wiki/Namie_Amuro
PS, Namie's lovely and luv namie