I want to say from the outset that this is not a particulary theological post, but it is something that I think probably needs to be addressed. It has been a busy posting day, but this will probably be my last for the day.
As I look in the NT, I see the Pastors of the different local Churches addressed as "Pastor" or "Elder". When I was first saved, my Pastor was insistent that we call him "Pastor", not "Jeff", but "Pastor". He would tell us, "It is not for prides sake, but it reminds me of my position in your life".
Probably one of the most "gut-wrenching" things I here from a Church member is to call their Pastors by their first names. Listen, They may be Steve or they may be Michael by birth, but that is not who they are in the lives of the members of Emmanuel Baptist Church, they are "Pastor". And, just as my Pastor said, it is not for prides sake, it reminds us of our position in your lives. I have seen new people come into the Church calling the Pastors, "Pastor", but as time goes on they hear other members calling them by their first names, so they begin to do the same thing.
Some Churches are not as blessed to have two Pastors, as other Churches. Both, according to 1 Timothy 5 are worthy of double-honor and I believe that part of that honor is by calling them "Pastor"; again, that is what they are to you that are members. I still call my home Pastor, Pastor. So, if you just have a Senior Pastor, call him "Pastor", that is what he is in your life; but if you have a Senior Pastor and an Associate Pastor, call them "Pastor", for that is what THEY are in your life.