The classic Hercules movie made by the amazing Mario Bava:
A collection of various sword and sandal monsters:
And the trailer for the original Clash of the Titans, featuring the work of Ray Harryhausen. Bow your heads!
For great roleplaying in the Peplum genre I recommend Mazes & Minotaurs. What if Jason and the Argonauts inspired Gygax and Arneson? This is the fun result. The site given has two versions of the rules: the original 1972 edition and the revised 1987 edition. There also supplements, modules and more!
Join me every week for another fun B-Movie Monday!