Probably been done but here goes. What are some good Pre New 52 DC comics/hidden gems?

Any suggestions?

Dennis O'Neil's Question run

Peter David's Supergirl

Underworld Unleashed

Arkham Asylum: A Serious House on Serious Earth

Batman: The Cult

Batman: Gothic

Dennis O'Neil's Azrael

Batwoman: Elegy

Cosmic Odyssey

Jame's Robinson's Starman

Geoff Johns Booster Gold

Secret Six

@larfleezy: You have excellent taste in comics.