Star Wars: Shattered Equinox
Ok, I played way back when the immortals were not so much friendly as they are now...which is part of the reason I came back to this mud. The immortals now are really helpful and love to RP with you through NPCs and such.
Though the Jedi are over running us they tend to RP good, but do not involve many players...and basicly to get into some of the RP you need to play long and make 'friends'.
Otherwise you can basicly do anything you want. Ranging from jedi to farmer. I've even seen lawyers. You can have RP items made for your special RP also. Have custom ships built. And so forth...basicly I think this is the best Star Wars mud so far.