Etiquette Question

I understand that waiting in line at the bank is inevitable. I once had to wait in line at the bank when the only two people there were me and the teller. As a rule, the bank I go to has one teller at the drive-through window, one or two at the counter, and five or six other tellers milling about, for all I know doing legitimate bank teller things. So the question comes, when I get to the front of the line at the bank, where is the appropriate place to look?

I don't want to stare at the tellers because by the time I get to the front of the line, try as I might I can't wipe that "So do you want to take my deposit or what?" look off my face. On the other hand, there is only so long I can feign interest in signs advertising CD interest rates and home equity lines of credit, and I worry that if the security cameras see me staring at my deposit slip for that long, they'll think I'm spell checking the holdup note.

Any ideas?