>I certainly would not, from your writings, expect you to be an introvert in any situation. 

Few would. and while I am not painfully insecure, I am definitely not one for the spotlight.

I wish I had the performer in me - but it is only in my head. I am somewhat envious of the people who can really be free in front of others. What I have found though is, it is easier with strangers than familiars. Is this the case for you too?