Sony Online Entertainment's Star Wars Galaxies is still one of the very few to feature much in the way of non-combat game mechanics. We aren't just talking about one-button crafting, an optional music system, or developer-sanctioned mount racing here, but rather an entire class dedicated to brightening someone else's day.
Today's 19.12 hotfix is billed as the Entertainer update, and it's rather aptly named given the lengthy list of tweaks coming to dancers and musicians across the galaxy far, far away. The Entertainer class is receiving a complete expertise tree revamp (and a complimentary reset), new combat buffs, new hairstyles for image design abilities, new dance moves, a new flourish, and several new commands (including a new perform tab).
That's a lot of new, but it's not all of it, and you can read the complete list of changes and additions on the official SWG forums.