Dont know if you guys have seen this site but it has some more pictures of adpi houses. I think EO's site should have something similiar to this.
http://www.ukans.edu/~adpi/links/links.htm
ETA: The University of Illinios Urbana house that honeychile posted is beautiful. I stayed there one night and I think it was favorite house #2 of all the ones I have seen (#1 being alpha psi's)
ETA#2: Honeychile does the fact that there was an adpi on designing women have anything to do with them using the Alpha Iota house?