I'm a fan of older zombie movies. There are some modern gems, but by and large I prefer the old school undead. When it comes to zombies, I prefer the slow moving shamblers over the modern day running zombies. It's not that I think sprinting corpses are any less scary. If I saw a rotting dude sprinting at me I'd scream just as loudly if that same rotting dude was limping toward me.
But fast moving zombies provide more of a "BOO!" type of scare, whereas the classic shambling zombie is a slow, creeping terror. It makes that final swarm, as we're seeing happen to Jayden and Jacob today, that much more terrifying because it's a slow build-up as opposed to a quick startle.
I remember playing the original Silent Hill on my old PlayStation and feeling that same creeping terror. Not a whole lot of enemies sprinted at you in that game. The static of the radio heralded the slow approach of some nameless horror from the mists of a forsaken town.
H.P. Lovecraft's The Haunter of the Dark scared the hell out of me, too. I remember reading that story in broad daylight, sitting in a public place on a beautiful summer day. I had gotten to a passage about the coming darkness, how the lights in the town were going out one by one and the Haunter's slow, inevitable approach to claim the protagonist... when an airplane happened to pass overhead and, for just a second, blocked out the sun. I jumped with such a scared startle that I threw the book.
That's all from me for now.