The big Five-O(prah)

Fifty years ago today my father was born.
Coincidentally, fifty-four years ago today Oprah was born.
For obvious reasons, both of these people have contributed to my life in very significant ways: my father genetically and Oprah - well, how does Oprah not contribute to my life?
Oddly enough, for some reason my father is never quite as amused as I am when I instruct the cake decorators to write "Happy Birthday Oprah" on his birthday cakes.