Boudica was a queen of the British Celtic Iceni tribe who led an uprising against the Roman Empire in 60 AD. This episode of the BBC’s Battlefield Britain tells the story.
This animated video takes you on a tour of ancient Rome during the reign of Constantine.
Cirencester Wargames has a set of modifications for the popular Lion Rampant games to allow you to play games set in Early Imperial Rome.
Kings of War is a great fantasy rules set from Mantic Games. Here’s a variant for Rome’s Rise and Fall.