The Killers - Everything Will Be Alright
I love the "no copyright infringement intended" comment after almost 6 minutes of stealing clips from the Harry Potter films! This is such a great song in a slightly shivery kind of way.
On a Harry Potter note... having finished the last book (and been happy that the story has been all wrapped up and that the last two films will probably kick ass) I am glad to hear that JK (not Jay Kay) has promised more from the land of wizards. She mentioned in an interview that there will be at least one more book with short stories and backgrounds to characters and wizarding families. More information here.