Screamers still bug me, even though I'm not really affected by them these days I still worry about them every time I watch a video or open something.
I never found Dead Money too creepy, until I was stuck in the Casino with them, at close range they were a little spooky when I couldn't get away so easily, but spooky at best. Although I will admit whoever did their animations did a fucking great job, that just ain't natural and my mind just tells me to move the fuck away from anything that moves like that.