Seriously. Tell the TED people!
It won't happen any time soon - the way for someone like me to get such gigs is, I suppose, to write a best-selling book. That's easier said than done, as Ophelia was saying the other day. But I keep thinking that it's possible to give a better approximation to the truth on the whole "science of morality" and "is morality objective" thing. Even a 20-minute summary of the full thesis (not just part 1) of Mackie's Ethics: Inventing Right and Wrong would actually be worthwhile. This thesis is unknown to the general public, but very important. Mackie makes all the good points that Sam Harris makes and others besides, without falling into any serious metaethical traps. Obviously, the book could do with some slight updating, as it was published over 30 years ago. But I've been reading it (yet again) and am amazed (yet again) at how solid it still seems. It was way ahead of its time in 1977 - though in another sense long overdue, as Hume's useful ground-clearing work, which Mackie follows, was resisted by philosophers for over 200 years.
Hume and Mackie do, in fact, provide the foundation for something like a scientifically-informed practice of ethics. They also show that philosophy can make progress.