You know that scene in the trailer when Captain Marvel has crazy glowing float-y hair and glowing eyes? It's a pretty short moment, but one of the cooler things you'll see in the small amount of footage. We got to watch Brie Larson film that exact moment. There's even a shot that starts at her crotch and pans up all dramatically while she looks all cool and stuff.
I only mention the crotch shot because, at one point, Brie was thrusting her hips at the camera between takes, which made everyone burst into laughter. Looked like a really fun set, I'll say that!