Wouldn't it be nice to fly some of the pre-war biplanes that got to see action in WW2, even if only in second-line units....
They'd be:
Polikarpov I-153
Fiat CR 32,42-used quite a lot
Gloster Gladiator
Avia B54(i think)
Grumman F3F
Heinkel He-51
Curtiss SBC Helldiver
Arado Ar-68
Fairey Swordfish-that was actually very successful in WW2
Henschel He-123 (i think)
Well,if you can think of some more, just reply and add them to the list.