Greyhawk = I like, but probably not enough to actually run a game in the setting
this was gary's world and i wasn't to fond of it. i would play here but wasn't thrilled.
FR = I adore FR and have run and played games in the setting, but having said that I don't consider 4e FR to even remotely be the same setting and I would not willingly play within it. But otherwise any time period, any rule set I'm game.
i am in so much agreement here. They killed FR for me. They used the death of mystra to try to push the world for 10 more years. (i wonder if ol' ed was even thinking on this one?)
DarkSun = Awesomesauce
I also like DarkSun, but not eveyone can DM this world. It takes a bit of experience to do it justice.
Ravenloft = Gothic Horror Awesomesauce
not a big horror fan, but sometimes i like to read the supplements.
Planescape = What do you think?
also a favorite of mine.
Ebberon = Little exposure, so can't really judge it much
this one i wasn't a big fan of until i ran it. I like to DM not play here.
Spelljammer = I love some parts of it and totally cannot stand other parts of it. Probably would not run or play a game in the setting.
The biggest drawback to spelljammer was the lack of tie in's.
Birthright = Don't know enough about it really.
i've never liked brithright.
Dragonlance = I like the world within the Weiss & Hickman novels, but it's far too vanilla of a setting for me to probably play within. I like the crazy, wierd non-standard fantasy stuff.