With growing concern about the safety of microwave popcorn, on top of the calories, we bought an air popper. My husband loves it! I add butter and grated Parmesan to mine.
Movie theater popcorn is my favorite. At home I pour kernels into a microwave bowl and microwave, no oil, no salt. It's a little bland but we're used to it and it's not as unhealthy as regular microwave popcorn. Sometimes we'll put Old Bay on it.