Orson Welles may have described Hollywood as the world’s best electric train set, but Steven Spielberg was the guy who figured out how to crank it up to the highest speed. Virtually every film of his has those indelible moments that remind you what movies can do. Wisely coming at the height of summer movie season, the Hollywood Theatre’s “Spielberg on Film” series combines stone-cold classics and lesser-known projects into an irresistible package—with every film screening on either 35mm or 16mm.