http://www.channelnewsasia.com/stories/entertainment/view/269676/1/.html

Larry Birkhead emerged triumphantly onto the steps of a court-house in the Bahamas to declare that paternity tests had revealed he was “99.9999” percent certain to be the biological father of seven-month old Dannielynn.

There’s no 100% in paternity testing. Cos of mutations or inability to compare the entire sequence?