Over 50 interesting comments already. As Noel Coward said, erm... I forget but it was something about the power of cheap music.
I think the best pop songs are cheap and disposable, but somehow compelling. For instance 'Day Dream Believer', 'Cum on Feel the Noize', stuff by Abba, ELO I quite like. Video killed the Radio Star. 'Common People' is my best pop song ever I think.