Best songs in dah world!

Alright, I know we got a five best music videos thread, but this is for songs that you love so much, that if you hear them being played, you just drop everything youre doing to listen to them, or if you hear it on youre MP3 player, youre automatically like 'whoa, Im listening to this.'

I really just have:
Chasing Cars by Snow Patrol
Waiting for the End by Linkin Park
Whisper by Evanescence
Tourniquet by Evanescence

and so forth