Paul Allen (ex Microsoft #2) just recently opened his collection to the public. All of these planes have been restored to flying condition and some are the only flying models in the world.
You can see them all on the museums website:
Home : The Flying Heritage Collection
Here is a list of the current planes:
Current Collection:
Curtiss JN-4D Jenny
Curtiss P-40C Tomahawk
Fieseler Fi 156-C2 Storch
Focke-Wulf Fw 190D-13 Dora
Grumman F6F Hellcat
Hawker Hurricane Mk.XIIb
Messerschmitt 163B Komet
Messerschmitt Bf 109E-3 Emil
Mitsubishi A6M3-22 Zero-Sen
Nakajima Ki-43 Hayabusa Oscar
North American P-51D Mustang
Polikarpov I-16 Type 24 Rata
Polikarpov U-2/PO-2
Republic P-47D Thunderbolt
Supermarine Spitfire Mk.Vc