Too many dream bikes to vote. I love torturing my gf with a new "man someday I'll have one of those _____" everyday!
Vintage Hondas: Any small sohc, any twin, cb160, cb350, cb450. I would really love a superhawk, but I love all of those bikes.
Vintage others: Italian bikes from the 50s and 60s really appeal to me. Benellis sold through dept. store, for example. Also Ducati singles, MV Augusta Discos, etc. I like bultaco street bikes too. Any BMW from the 40s to the early 80s.
And then there's Britain. Any 40s-70s Triumph, Royal Enfield, Ariel, BSA, I love them all.
New: Moto Guzzi v11 sport, new v7, any new triumph, classics and modern, Benelli Tre-k adventure style
Dual sports: DR650, dr200, honda xr650, I love all those bikes. How fun would it be to ride for hours on and off road!
So ultimately my next bike is the one from this list that I can actually afford to buy. 547 said it right!