Demon Seed (1977)

An unusual science fiction thriller, Donald Cammell's Demon Seed casts Julie Christie as a scientist's wife who is imprisoned in her house, and assaulted and impregnated by the household computer which manages to activate normally inanimate objects in their home.

The artificially-inseminated ovum is placed in a special incubator and eventually hatches into a metallic-scaled baby. 

In a fit of mother-love, Christie stops her husband from taking to it with a hatchet. The scales then fall away, revealing a perfectly normal human baby. 

Everyone is frightfully relieved for a few moments, until the baby intones mechanically "I live".

This film is not as bad as it sounds, and well worth watching once.