P.S.
No glitz and glamour, that's for sure.
I guess you''ll be leaning more towards cowboys and indians, gladiator or Roman soliders, Star Wars, Transformers, superheroes and Indiana Jones?
See if you can find and display theater posters of famous guy movies. Or print them off the computer, mount it on black posterboard, cut holes around the edges and push those pointy light bulbs through them.
Have a marquee display saying "Now Showing: Cub Scout Pack #19".
Edible themed cake - a hat shaped like Indiana Jones? a lightsaber? a movie reel? (2 round cakes side by side w/long strips of gum or fruit roll ups edibly painted black for the film)
I know Oriental Trading has a line of Hollywood themed party supplies, but nothing comes to mind at the moment for favors. How about a mix CD of famous theme songs from action movies?