tub/shower combo with no doors/curtains I just LOVE the idea of NO tracks or doors or anything to get all gunky! I hate the shower/tub situation usually, but I could possibly deal with it if it was a sunken bath.
Home theater room in the attic. A more do-able idea than those other fancy home theater rooms! Much cozier and warmer than the individual recliners in rows that you see in a lot of fancy home theater rooms