Rock and roll fans of all ages should check out The Who's Quadrophenia, The Director's Cut, cd and DVD package.  Stream a song here. Pete Townshend revisited the original mixes, brought Roger Daltrey up a bit, and also added work versions and demos to provide a fascinating glimpse into The Who's process.

It's a spectacular collection. There was nothing like Quadrophenia in 1973 and there's still nothing close to it today. Check out the official website which has gobs of great photos and recording info.