Love or hate Hollywood endorsements, at least Rob Reiner's backing of presidential candidate Sen. Hillary Clinton has humor. The "Meathead" of All in the Family stars in a funny new online video in his real-life job: as director. You'll see some geeky volunteers mildly campaigning for Clinton when Reiner steps in to push for passion. It works, of course. Now if he could give the candidate a little lesson in enthusiasm.