That reminds me: I downloaded all of their albums. Songs For The Deaf had better be as good as you've told me.
It's most people's favorite album... for me... I really can't put my finger on a favorite of their albums, all so damn good.
Did you know that Smoke on the Water is about Deep Purple watching a building burn down (in Sweden or Switzerland... can't remember which)... the one they were supposed to play in the following day. Frank Zappa and the Mother's of Invention were playing in the venue at the time.