See all Mormon Doppelgängers here.
Oliver Cowdery and Bill Nye were both educators who like to wear bow ties. Although Cowdery was a man of tremendous faith, Bill Nye is more of a Science Guy. (Hiyo!)
Bill Nye got his start in the entertainment industry after winning a Steve Martin look-alike contest. Therefore, according to the law of doppelgängership, it should follow that Oliver Cowdery and Steve Martin resemble one another as well.
I rest my case.