[Akuma]

The War of the Worlds - B&W and Color versions
Star Wars Trilogy
2001: A Space Odyssey
Invasion of the Body Snatchers
The Thing from Another World
Day the Earth Stood Still
Metropolis
Close Encounters of the Third Kind
The Village of the Damned
The Time Machine
Blade Runner
Godzilla
The Creature from the Black Lagoon
Invaders from Mars
It Came From Outer Space
Them!
Planet of the Apes - B&W
Twenty Thousand Leagues Under the Sea
Things to Come
Fiend Without a Face
When Worlds Collide
Terminator 1 and 2

You'll find a lot of those in the Myster Science Theater 3000 DVD. Some of those aren't black and white but they are classics that can't be ignored.