Having watched the spot at least ten times now, I see where I'm diverging from everyone else I know who's seen it (none of whom found it racist, only dumb )

People who warm to the thought of someone spreading positive energy in an office situation would not be as likely to see the lead character as a mocking, insulting caricature. As I said, I would love this guy if I still worked in the oppressive cesspool that is corporate America. So no matter who he was trying to be, I wouldn't see it as insulting, because I warmed to the thought of someone walking around being happy and spreading it around. I detest whiny office groupthink.

If that kind of positive person annoys you, you're more likely to see him as a snotty construct poking fun at someone else's race/culture.

I still think it's childlike and mildly funny. But I am alone in that perspective!