British TV presenter, James May (of Top Gear Fame) built a real 2 story Lego House and lived in it. Not only was the house made of Lego but also all the furniture. It was part of his James May's Toy Stories series. Well worth checking out if you can find it on the net. Yakumo
I remember his Mekano episode, and that was cool. And well Yakumo-sama Mekano used to be from Liverpool, if I am not mistaken. So I would have loved to see the Lego house episode.