Serenity (2005)
Serenity is the rare feature film made to give a canceled television series a proper conclusion. Joss Whedon wrote and directed.
Actor: Summer Glau
Summer Glau played River Tam in Firefly and Serenity, a character whose combat ability comes from having been experimented on, and the physical performance draws on her training as a ballet dancer. Terminator: The Sarah Connor Chronicles gave her a further genre lead.