[rixrex]

If you like quick zombies, you'll like City of the Walking Dead (aka Nightmare City), one of the films on my list of 10. Here's an IMDB plot blurb:

"TV news reporter Dean Miller waits at the airport for the arrival of a scientist that he is about to interview. There, an unmarked military plane makes an emergency landing. The plane doors open and dozens of zombies burst out stabbing and shooting military waiting outside. Miller tries to let the people know of this event, but General Murchison of Civil Defense will not allow it. Then, Miller tries to find his wife and escape from the blood-thirsty zombies that are all over the city."

If you like the slower, but unstoppable type of zombie, then catch Let Sleeping Corpses Lie, from 1974, which means it predates most zombie films.

"A cop chases two young people visiting the English countryside, suspecting them of a local murder; unbeknownst to him, the real culprits are the living dead, brought to life with a thirst for human flesh by radiation being used by area farmers as a pesticide alternative."

There's no doubt that the slow moving zombies that Romero introduced in Night of the Living Dead were pretty terrifying at the time, and the sheer multitude of them coming in a continuous, seemingly unstoppable stream can be just as frightening as a quick moving zombie film. Romero used slow moving zombies to good effect in most of his zombie films.