Brit-Speak: Sorry.... NME's?

[Steve]

Here is an exerpt from a recent interview with Dan
Radcliffe at the Times Online -

http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/stage/theatre/article1353034.ece

"He will listen to his new music in a bedroom stuffed 
with piles of old NMEs that his mother, Marcia, is 
constantly asking him to chuck out."

What are NME's? They use the term as if every person 
should just automatically understand it. I suspect
if I lived in London, I would understand, but I
don't, so I don't.

Could someone please explain?

Steve/bboyminn