salvete: Hmm I wouldn't call 'Dollhouse' a sad song though I the subject it's addressing is kind of. It was stuck in my head too for quite a while. Yes, the video is amazing! That part where the brother is taking his place on the bed and he smiles slightly, he looks so exactly like a doll, it's wow. So much effort must have gone into making the video, it's so elaborate and perfect.
When I'm happy I don't need to listen to happy music, and I can't really stand the kind of shallow music that just raps out 'Party all night' or something. I don't usually like music that's just as well not made at all, because it doesn't make any difference to me, the industry, or anyone or anything.
You might like Carousel, I found it just as catchy as Dollhouse. I didn't like the video or lyrics much at first because it was like she was trying to be creepy but not making sense, but gradually I got all the metaphorism.