Pulp sci-fi classic about a man who starts to shrink after being enveloped by a strange atomic cloud while on holiday. Notable for its relatively intelligent script (adapted by Richard Matheson from his novel), for some imaginatively amusing special effects, and for an existential streak

which finally has our (tiny) hero pondering the meaning of existence. (Matheson sold his novel on the condition that he be allowed to write the script. His first novel, I Am Legend, had been badly butchered, and he had no wish to see that happen again. Eventually, I Am Legend was filmed as

L'ULTIMO UOMO DELLA TERRA from another writer's screenplay.) Source for a promising, but largely unsuccessful remake, THE INCREDIBLE SHRINKING WOMAN, in 1981.