Especially older ones. Their mouths don't move properly! It always looks like they're trying to hold in a mouthful of marbles. I think it's all the Botox and it gives me the creeps.
I find it really unfair that male actors are allowed to have foreheads and lips that actually MOVE while the moment women hit 28 or so they're supposed to become increasingly mannequin-like. Often too you see these frozen old-lady-dolls playing great characters and their weird, weird faces just makes me dislike them no matter what. AIBU to be creeped out by it? Should I just accept that this is the way the world is now?