I *really* need to get pictures of the room addition. Definitely the best room in the house. I've lived in houses smaller than this room.
It's got a very unusual vaulted ceiling and it's great to turn on the ceiling fans and feel all that warmth coming down.
The workshop definitely gets ceiling fans. And I'm going to be kicking myself daily for not going with radiant heat in the floor and Icynene insulation. Icynene is a big part of why the room addition is so efficient. We got a really large furnace for it, but you can practically heat that room with a few candles.