My main ringtone for when someone who I don't know calls is the music edition of Obama's "Yes We Can".
For when my dh calls, it's Anthony Hamilton's Can't Let Go
When my friends call it's Destiny Child's Girl
When schools call for subbing jobs, it's the Muppets Manamanah.

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"Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God? " ~Epicurus