I've played and run in many Forgotten Realms, Greyhawk, Planescape and Rokugan campaigns, and of course also plenty of homebrew.
I've also played in the campaign setting of the 3ed Freeport adventures, although at the moment I don't remember if it had a name or was just Freeport.
I should also mention Al-Qadim even though technically it can be considered part of Forgotten Realms, but IMXP it is usually played on its own.
I have played 4e but for such a short time before quitting that I wouldn't qualify it as a "campaign".
I regret to have never played Dark Sun, Ravenloft and Dragonlance yet, but maybe one day...