What settings have you played or run?

[Cithindril]

Played in:

1E Mystara
Greyhawk (Original and LG)
Forgotten Realms
Numerous Homebrews
Eberron

DM'd:

Greyhawk
Forgotten Realms
Homebrew

Numerous campaigns and always ready to play/DM in any capacity:

Scarred Lands (only 8 more books to complete my collection)

 

[Yair]

Not much, really:
Played in...
Greyhawk
Ravenloft
Mystara (OD&D)

DMd...
Forgotten Realms
Greyhawk
Mystara
Birthright (Cerilia)

plus Homebrews, and non-D&D games.

 

[Nightfall]

Numerous campaigns and always ready to play/DM in any capacity:

Scarred Lands (only 8 more books to complete my collection)

You and I so need to get together and run/play. It's sad that we haven't but that's distance for ya!

 

[Brakkart]

What a great thread, okay brainwracking time...

I have played in:

Several Homebrews
Warhammer
Dragon Warriors
Ravenloft
Forgotten Realms
Mystara
Spycraft
Birthright
Dark Sun

DM'ed:

Several Homebrews
Forgotten Realms
Greyhawk
Freeport
Dragon Warriors
Mystara/Hollow World
Ravenloft
Masque of the Red Death

Settings I own but haven't used:

Al-Qadim
Iron Kingdoms
Scarred Lands
Ruins of the Dragon Lord