I wish more bands did that on their albums.
The first one I really remember is after Radiohead released OK Computer and Ed O'Brien gave updates on the Kid A sessions. I wonder if all the songs he talked about have come out by now? I think most did, but it's been a long time.
That was back when they had that crazy website where there were a series of questions and you chose an answer and it took you somewhere else, like an endless maze. Then there would be random artwork and lyrics to songs that weren't released at the time.
