I'm not really happy to have to write this post, but a blogger's got to do what a blogger's got to do. The reason is that Katie Couric has done something requires—nay, demands—a heapin' helpin' of Orac's characteristic Respectful Insolence. Why should I give the proverbial rodent's posterior about who gets the Insolence today? The reason is that, when it comes to medicine, Katie Couric has done a fair amount of good. After the tragic death of her husband at a young age from colon cancer, she became an activist and spokesperson for colorectal cancer awareness, even famously undergoing her very…