The floor trusses are up and the plywood for the base of the main floor started going down yesterday. It's supposed to be finished today. Since the new house plans have the garage in the basement with living space above (instead of the reverse in the old house plans), the main floor is significantly larger than the basement. So we look forward to seeing how the space really looks when we get the entire floor space blocked out.
Seeing the basement rooms actually enclosed — ceilings and all — is a big thrill, too. I told the kids they could sleep in their rooms last night, since they had walls and a room over their heads. They didn't go for it.