Not fussed on any current singers and generally pop music nowadays, but some songs from back in the day which deserve a mention are:
Anastacia - I'm Outta Love
Christina Aguilera - Genie In A Bottle
Jennifer Lopez - Waiting For Tonight
Lasgo - Something
Christina Milian - AM to PM
Mel C - Never Be The Same Again
Ok, I'm off to bleed the radiator, drink some beer, and potentially locate my testicles.