Haha is it funny that I, a Hatsune Miku fan, hate the 2 things you posted.
I love Nomura but that Miku just looks terrible (unlike his other Miku design)
And the preformance on Letterman was awful, apparently its English but I couldnt understand shit. Made my ears bleed =( So many good songs they could have chosen.
Here is Nomura's Miku design that looks totally Nomura and a well done iteration of Miku