I just say "Hi, how ya doin'. Do you have any of the rolls that customers wrap and bring in? I like to search through them." Then as they're getting them out, "you don't have any halves or large dollar coins do you?"
Easy as pie. Small talk is ok in tiny doses, don't annoy them. I usually say something that pertains to their day, I never start talking about myself since they would probably not care. Maybe just a little "you guys been busy today?".
this is for banks that I've never been to before or sporadically go to. Of course my main banks we're on a first name basis and more small talk is generally involved. I never, ever, ever show any anger, frustration, or disrespect at a bank no matter what happens. If you don't like the tellers, just don't go back to that bank. Tellers know others in the business and pretty soon you'll start getting the cold shoulder at other branches too.
'Em I still like your style though