Shadows of Isildur
The world in this mud is just fan-tas-tic.
Room descriptions, maps, scenery, cities, forests, towns, etc, its all just incredible. You dont even have to sign up and play under a real character, you can just use the random room viewer in the guests lounge and enjoy.
I found the heavy emphasis on the dominance theme to be a little off-putting, but once you learn to handle yourself and skirt around it (if you like) the whole thing becomes another game altogether and really quite good.
So, I'd definitely give it a go if I were you, lots to enjoy.