On the field, University of Florida senior Tim Tebow is stirring up a great deal of controversy: Will he succeed in the NFL as a quarterback? Will he be drafted in the first round? What position is he best suited for as a professional? But those questions pale in comparison to the fervor Tebow is creating away from the gridiron. The former Heisman Trophy winner is slated to star in air a 30-second Super Bowl commercial this season. It will be paid for by the Christian group Focus on the Family and will emphasize the football star's pro-life stance on abortion. The ad, whose slogan is "Celebrate Family, Celebrate Life," features Tebow...