I'd be curious to hear the top initial reactions.

Personally I'd be going with unforeseen consequences of however happiness is defined. But that's cause I live and breathe computers so I imagine early AI having a personality that is computerish and I understand at a very fundamental level what can happen when seemingly innocent instructions are carried out with infinitely relentless and pedantic determination.

I have thought for a while now if we want to survive the transition then the first really successful AI's are going to have to dramatically more tolerant and understanding than the average human, because you can pretty much guarantee that they are going to be subject to the irrational fear and hatred that humans generally inflict on anything new or different.