Hercules Unchained (1959)
One of the first sword and sandal epics, as Hercules and a host of historical literary figures adventure in ancient Greece.

Atlas (1961)
Roger Corman's attempt at peplum is very light on action, but sparkles with well-written dialogue. If you can find it, I suggest you give it a shot.

Vulcan, Son of Jupiter (1962)
Vulcan and Mars fight over the goddess Venus, but they'd both be better off with the nymph Aetna cuz she's way hotter.

Hercules Against the Mongols (1963)
Hercules plays fast and loose with history as he fights to stem the tide of the Mongol invasion. Asian women are cute, by the way.

Hercules and the Tyrants of Babylon (1964)
Herc does his best President Bush impersonation, single-handedly laying waste to ancient Iraq. And the girls are pretty.

Hercules and the Masked Rider (1964)
A marginal Hercules movie, more about men wearing tights and slapping each other a lot, but still fairly watchable.

Hercules and the Princess of Troy (1965)
Herc saves a fair maiden from an unspeakable horror of the deap! From the waning days of the sword and sandal era.

Santo in the Vengeance of the Mummy (1971)
Mexico's cultural icon solves the mystery of the vengeful undead warrior, though everyone dies around him in various gory ways.

Santo versus Frankenstein's Daughter (1972)
Santo is back, this time foiling the evil plans of a power-mad woman with a questionable linage.