"Dilbert's Ultimate House (DUH)" has some great ideas (seriously, read the spec's) and the CAD images and tours are nicely done. Its well worth a look and some of the less serious suggestions are funny.
This was my favourite: "Solar panels to power electric fans. These fans will power wind powered generators on non-windy days. The wind turbines will power klieg lights to recharge batteries attached to the solar panels on windy nights."
Raj Raheja, of Heartwood Studios, did the "Virtual construction" using AutoCAD & 3D Studio Max 5.1 & 6 and said "It was a lot of fun!". Their impressive company website also well worth a look if you are interested in CAD/Visualization.
"In pursuit of finding true happiness and peace on earth for Dilbert and Dilbert-like individuals across the globe, cartoonist and visionary Scott Adams embarked on a journey to create "Dilbert's Ultimate House"(DUH)."
"Dilbert is single and needs all the help he can get," said Adams. "He'd design his house to be wife bait. We wanted him to have a house so impressive that some woman would overlook his personality just to live in it."
Link to: Dilbert's Ultimate House.