Movies with closeups of men or women's mouth?

hi, i'm in a film class and we're studying the different types of
shots in movies. we got to the closeup and we have to cite 5 examples
of of the closeup, i chose the mouth. Does anyone know of any movies
that use this? I already have 2 good examples. Requiem for a Dream and
2001: Space Odyssey.

it would also help if you could tell me at what part of the movie the
scene occurs, since I have to compile them, but that would be too much
to ask.