Bogie's M3 Lulubelle from Sahara would be cool. The M2 half track pretending to be a '251 would be cool, too. With significant opportunity for kit bashing figures.
The PT's from They Were Expendable would be good. Plenty of scenes to gin up; towing the boats; transporting "The General"; the PT crews as ad hoc infantry.
"1941" offers up some eye-catching possibilities--a P-40 crashed into a theater; the M-3 tank in the street, or along the board walk by the amusement park. The 40mm scene worth it just as a reason to get the HR Bofors <g>.
The painted carrier deck runway from "30 Seconds Over Tokyo" would be cool, and with several atypical figures needed, too.
The bunker from "Pork Chop Hill" has been on my list of coulda-woulda-shoulda. Also the temple from "Steel helmet."
The helo rescue from Bridges of Toko-Ri--although the brig green tophat could be tricky..
The cargo ship from "Mister Roberts" has always been on my list to cobble up. As is doing a side-by-side mooring of the ship used in "The Caine Mutiny" and the ship it is supposed to represent.