I've just noticed a curiousity about (maybe) one of the best intros by Linkin Park. The sample played on that intro is a beautiful poem by one of the greatest poetists, Federico Garcia Lorca. The sample used is the version by the amazing Joan Baez. 
  
Here's the part that LP used: 
I want to sleep the dream of the apples 
To withdraw from the tumult of cemeteries 
I want to sleep the dream of that child 
Who wanted to cut his heart on the high seas 
I don't want to hear again that the 
dead do not lose their blood 
That the putrid mouth goes on asking for water 
But all must know that I have not died 
That there is a stable of gold in my lips 
That I am the immense shadow of my tears 
  
  
And here's the link from the Joan Baez version: 
  
http://www.youtube.com/watch?v=iCjVkF7r_IM