I really really like this song at the moment, it's called "beating heart baby" and it's by head automatica. I feel this way about songs once in a blue moon, as though I could listen to it for hours and never change it. These songs in the past have included my favourite song of all time (foo fighters - everlong) and fiona apple, never is a promise.
I recommend it, you can watch the video here:
http://uk.music.yahoo.com/ar-311598---Head-Automatica *thinks/hopes*