I am addicted to this song at the moment and it is currently looping on my player! It is used in Apple's MacBook Air commercial whereby Steve Jobs selected the song himself!
A bit of introduction about the singer courtesy of wikipedia:
"Yael Naim was born in Paris in 1978 to Tunisian, Sephardi-Jewish parents. At the age of four, she moved with her family to Ramat HaSharon, Israel, where she spent her childhood and learned how to speak Hebrew. She served in Israel Defence Forces as a soloist in the Israel Air Force Orchestra."