Time alone reveals the just;
A villain is detected in a day.

So everyone already knows the Oedipus story, right? But I'd never actually seen or read the original play, so...
1. Wow, we're just dropped into the middle of it. I thought this would start with Oedipus getting the prophecy and THEN doing it all, but he's already the king. Part of the format, I guess - everyone just standing around making speeches at the crowd.
2. Wow, this really is a story of a powerful politician getting exposed for murder and improper sexcapades, trying to weasel out of it... and then actually feeling ashamed about it and taking responsibility for his actions?!? Would never happen.
3. Still, a lot of bits here really still work 2,500 years later - the quick-fire dialogue, the irony of the prophecy and Oedipus' attempts to get around it, and his absolutely heartrending breakdown at the end. People aren't that different.

Electra certainly isn't bad either, though it has even less of a dramatic arc to modern eyes - I want my brother to kill our mother, ooops he's dead, no he's not, stab stab stab. Still, Electra's big speech is pretty damn effective.