>>532 I agree anonsy, I don't think he will want to comment in an uncontrolled situation and still less now there is a lot to comment about.
I am not sure that Zachary Levi would allow it either. He seems a good guy and tough enough to shut down any heckling.
I also think that people aren't actually likely to ask those questions in the smaller nerd hq setting. It's fairly intimate and well lit so he can see the audience, so social pressure is perhaps more likely to act as a restraint.
Hall H and/or the evening sesh with a less sensitive host - anything goes!