An older gentleman was at the doctor for his annual physical. The doctor had ordered a blood panel and some other routine tests but was pleased to tell the old timer that he was in great shape. As he was wrapping things up he asked if the gentleman had any other concerns. "As a matter of fact I do have something bothering me", he said. "Every morning in the shower I spontaneously break into song. But it's always the same song, 'What's New Pussycat'. Then at night just as I'm about to go to sleep another song runs through my head, over and over, every night I go to sleep with the 'Green Green Grass of Home' on my mind". The doctor said, "Oh that's nothing to worry about it's just Tom Jones Syndrome. An annoying but harmless affliction." "Really" queried the patient "You've heard of this before? Is it common?" With a shrug the doctor said, "It's not unusual".