There's a real live PBY in "South Pacific".   No kidding.   Even a flying scene or two, complete with flak.      It's set in WWII, and one of the characters is a Catalina pilot.    
My favorite is "Music Man" though.    Maybe cuz I feel a little Iowan at heart, or maybe I just like to laugh at em.    Lots of good tunes, very little sap.      Excellent cast of characters.
Never would've even heard of these had it not been for my wife.