NES/8-Bit Talking Sprite Examples?

I hope this is the appropriate place to post this; there didn't seem to be these kinds of questions in the spriting subforum.

Anyway, I am trying to develop a style for a game I am writing and the only problem I have at the moment are animations for the character sprites (which are 16x16) when they are talking.

Can anyone point me to some examples of NES or similar sprites that show characters talking by moving their mouths? All I can think of at the moment is river city ransom.

Thanks.