Being in my late forties and having heard just about everything ad nauseum, I always appreciate new music, and my son turned me onto Porcupine Tree about 3 years ago. I NEVER get tired of listening to them. The band has been around since 1991 and they have a tremendous body of work.
For anybody who likes Pink Floyd, the Alan Parsons Project, Radiohead, Metallica and even a touch of the Beatles, this is one of the greatest bands in the world that few have even heard of. I recently saw them at a sold out Radio City Music Hall in NYC. Their fans are rabid about them. Officially categorized as "progressive rock", they are from England of course, and this is, in my opinion, their signature track, 17:44 long......
http://vimeo.com/6853481