About two weeks ago,  I went to see Roger Waters perform Pink Floyd's 
The Wall. And yeah, it was... impressive, to say the least. Music-wise,  there's nothing very surprising, of course; his band pretty much  recreates the songs exactly as they sounded 30 years ago, which is a  bit... eh, but hey, it used to be one of my favourite albums (probably  still is on some level) and I'd long since given up any hope of hearing  it performed live, so I'll take it. But the show... wow. With modern  projection techniques you can do a lot of stuff you couldn't do in 1980,  and so that huge wall they build across the stage turns into a canvas  where Waters can project (in every sense of the word) both the original  concept of the album and what it means now, but also making it more than  just a video screen; the wall itself becomes an actor. (And that's not  counting the obligatory flying pigs, planes crashing into the stage,  10-metre-puppets walking across the stage, etc) He plays down the  (presumably slightly embarrassing to a 67-year-old multi-millionaire)  tortured rock star angle and dials up the politics, hammering the  audience with a barrage of images - cartoons, TV news, images of dead  soldiers and activists, youtube clips, 3D animation, quotes from Orwell,  Kafka, Orwell, Eisenhower, Orwell, Pink Floyd, Orwell... OK, so 
The Wall doesn't 
quite  let itself be completely repurposed as a 2011 anti-war anti-authority  anti-media molotov, and there are some bits where it feels like he  misses his own point a bit or doesn't take it as far as he might have  (if you're going to do "Waiting For The Worms" in Europe in 2011, update  the iconography, damnit) but hey, it's only rock and roll and I like  it, like it, yes I do.
YouTube - [HD] Roger Waters - Run Like Hell - Chicago 9/20/10