For a while now I have been collecting excellent designs, artwork and photos from Scott Lowther's excellent Aerospace Projects Review Blog.
Plans and so on for many amazing flying things I remember reading about can be found on Scott's site, including spacereaft. You relaly have to see some of these designs to beleive them.
In other posts I have commented on how preposterous fictional aircraft and spaceships annoy me because they don't even look like they would work: well, if you really want to make something that at least LOOKS like it would fly, check out the designs here, from real Aerospace companies. I have just become a sponspor for Scott and it's worth it if you are a fan of all that sort of thing: for $5 a month you get all the goodies, actually a better deal than paying for each item alone.
About the only thing more awesome would be to have a model that folded into a small, hand-carry package. . . . . but then they are probably working on that right now.