My cat always looks like she's just seen a ghost. She also doesn't do much aside from stare at you.
On top of that, if she's upset, her tail goes all 'question mark' and she screams at the top of her lungs while maintaining that creepy, huge-eyed, direct eye-contact stare.

But on the upside, she isn't passive-aggressive like my sisters' cat who will break your shit if he doesn't get what he wants, or if you're too slow to answer his summons.
She's creepy, but harmless.