In my view, you have an excellent shot at HBS (a shot nonetheless, but an uncontested one) and UCLA should be doable. You may want to throw in Stanford and other M7 schools and I'm sure you'll get at the very least one admit (assuming you will write well seems a safe bet).
Definitely do not bother with the GMAT as your score and GPA are more than enough for you. I don't think that even a 750 would help your case but very slightly.
Agold, I am a consultant and I don't have an 80th percentile in quant! Yet I'm in at Kellogg MMM, where they specifically mention statistical proficiency as a prerequisite --I have a C+ in the only statistic class I took. You are right in underlining the fierce competition of this year, yet it's fiercer for the likes of you and me, not for Stockmoose --do we really think there will be a slew of television authors applying because of the credit crunch?
Again in my view, the general rule "the fiercer the competition, the less important the GMAT" applies: we are set to see a lot of 770 dings (all the schools will become more Stanford-like). Stockmoose has the privilege (and the merit, since it's harder landing a job in Hollywood than in McKinsey) of not having to fight in the GMAT arena and said advantage is going to carry a lot of weight these times.
Your chances at H/S are at least on par with the traditional IB/MC applicant with good XCs, but only if you convey a strong reason for your MBA. Don't waste space with your lack of subordinates or whatever, just throw every word at why MBA, since that is not trivial at all (if the adcoms deemed you unfit for the academic rigor of an MBA, you would be dinged no matter what you write, the Q44 is there: fortunately for you, that's not going to be the case).
Paradoxically your chances are not that much higher at second-tier, ranking-obsessed schools than at Stanford, so my advice would be to apply to M7s of your choice and UCLA for good measure.
That said, go ask to some real consultant on the relevant boards! :D