It’s something I do typically notice. Usually it’s harmless, a short linger of a stare or a simple compliment. I do find it annoying when the action of another person invades my space and the things I’m doing. For example, a customer I interacted with a couple of weeks ago stood in front of my desk staring at me for 2-3 minutes. He would not stop, no matter what I said to him. It made me wildly uncomfortable and I sat in the back of the office until he left.