Many aircraft in particular come to mind, but I'll stick with 4. The P-38 lightning,B-25H Mitchell, F4 Phantom, and the A-10. I've always been a fan of the beautiful/ugly birds.
On a non-aircraft side, the 4-6-4 Hudson steam locomotive in the early New York Central, 20th Century Limited art deco fairings.
Aircraft are like women, there's no such thing as an ugly one. If I had to pick just a single choice though, it would be via the seductive caress of that flying siren, the Northrop F-5.
Aircraft, Jets: The F-105 Thunderchief. That is so ugly it's beautiful and screams of sheer, brute power. Another one is the MiG 21, early versions; so sleek and shiny.
Aircraft, Props: I have to agree with the Me110. Something about that bird is so appealing to me. Another is the Japanese Zero; such a sexy little plane.
Armor: Well, this one is tough. One of my all time favorites is the early M-48 tanks; I just love that beast. Another is a more specific tank: the T-72 in West German markings. In Russian markings it's pretty cool too but there's something specifically intriguing about this tank wearing a Maltese cross on it.
Ships, sailing: The Golden Hind. That and the Cutty Sark.
Ships, powered: Another tough category for me. Russian Krivak class ships; again so sleek and racy. Also, Italian battleships from WWI; they sure built them pretty. More modern is the Italian Giuseppe Garibaldi modern Italian aircraft carrier. Beautiful ship! I just wish someone would release one in 1/700 scale plastic!
The Duke
Virtuoso of Miniatures
"Do you know what the chain of command is? It's the chain I get and beat you with 'till you understand who's in ruttin' command!"
-Jayne Cobb, Firefly Episode 2 "The Train Job"
We are modelers - the same in spirit, in hunger to insanely buy newly released kits, hustlers in hiding our stash from our better halves and experts in using garbage as replacements for after-market parts.