Stitchawl, the secret to movie-theater style popcorn is popping it in coconut oil. horrible for you, but that's what gives it the theater flavor. The theater I worked at in college also put seasoning in with the oil when we popped, so it was cooked in. A scoop of Flavorcol (that was the brand of seasoning salt) and it was deeeeeelish! We actually had people come in every week just for the popcorn!!
man, now I want theater popcorn!