Oscars, in March, that provoked a moment of very public violent dissociation from Will Smith was not especially funny. Something about Smith’s wife, Jada Pinkett Smith, and the largely forgotten nineties war movie “G.I. Jane.” A Bruce Vilanch special: lightly bad taste, seemingly harmless, even Will Smith seemed to laugh before changing his mind. But, in the seconds after being slapped onstage, Rock demonstrated why he was up there in the first place. As the audience looked on, speechless, he knew just the right thing to say. “Will Smith just smacked the shit out of me!” Oh, yeah, that.