I've done more role playing in Project Gorgon than any other MMO. I have also seen more people roleplaying in this game percentage wise than other games. I think its because the game has so many different skills that people get into their roles and just become them. For example you can through various means transform into a deer. This isn't a temporary thing and it comes with a bunch of deer related skills. You can BE a deer and there's a dude that does this. I've seen him around just acting like a deer in the wild. The game even makes him talk in deer language.

It's not very serious roleplay most of the time but it's fun and whimsical.