the doctor was caligula while the master was the emperor claudius?
seriously soewhere along the line we need a john hurt/ derek jacobi scene in doctor who

I like that idea

All 5 actors who played the emperors in I Claudius have been in Doctor Who in one way or another now.
Baker (Tiberius), and Blessed (Augustus) were in original Who and Biggins (Nero) was in one of the audio stories.

Damn, I'm stuck in trivia mode...

This would be match Al Pacino / Robert De Niro (Heat 1995)