Jon has often said that everything he does on-stage was inspired by Southside Johnny. Having seen SSJ a few times recently I can fully believe this - he and Jon act very similarly.

I seriously doubt Jon has a correographer (sp?) in answer to your question. I do know what you mean about him looking uncomfortable when Ray was singing but I put that down the fact that he is usually singing - even when he turns up as a guest for other peoples shows he usually has a guitar to hide behind/focus his attention on etc.