Maybe I'm a sucker, being the son of an architect and all, but Iñaki Aliste Lizarralde's architectural renderings of famous fictional houses are awesome. There's tons of them on his Tumblr, but check out a few of the geekiest below:
For the Golden Girls house, Frasier's pad, and more, head on over to the Tumblr site. And fingers crossed Iñaki tackles spaceships next! Enterprise is easy, it's just two hallways and a deck.