Howard Stern’s insane success and career longevity is largely due to knowing his limitations. So when I heard that he’s in talks to replace Piers Morgan on ‘America’s Got Talent,’ I became immediately bothered. Sure it’s a good gig that pays a lot, and he’d likely be great at it. But he has an identifiable brand to uphold, and if he starts to take jobs outside of his coveted radio show, he risks ruining that brand. Plus, the Stern fans are an underground community of devoted followers and I don’t want a cookie-cutter audience getting a piece of my man. Hands off, NBC.