If you loved Serenity, try Battlestar Galactica: Razor
A bridge between a film you've already seen and one most people haven't. Battlestar Galactica: Razor has roughly 8.4× fewer votes than Serenity — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theysit in Action / Science Fiction / Thriller territory. If that's the register that drew you to Serenity, the second film will land in a comparable space — through a different lens.
What Battlestar Galactica: Razor is
Pegasus hangs in orbit, autumnal gloom, alarms blaring, Kendra Shaw at her station, Cylon war looming. Shaw's eyes on the battle-scarred ship, guns blazing, chaos erupts. Félix Alcalá directs this tense sci-fi thriller.

