Brain tumors are notoriously hard to treat. In fact, the most effective chemotherapy treatment in the laboratory, adriamycin, is unable to cross the blood-brain barrier to affects against brain tumors. But, today, scientists announced that the popular impotence drugs Viagra and Levitra seemingly help adriamycin cross the blood-brain barrier and attack brain tumors. If you were wondering what that has to do with conservative columnist Bob Novak, he was diagnosed today with a brain tumor. Even if it helps, I think I speak for much of womanity when I say that I don't think Bob Novak should be given ED drugs, like, ever. [Reuters, AP]