As promised here are the details i have about the crew of the (firefly class) spaceship Serenity in Joss' new series. Ive gathered this together from several magazines and websites so some of could be inaccurate:

Captain Malcolm Reynold - played by Nathan Fillon
A jaded man who trusts noone, will kill if pushed.

Zoe - Gina Torres
A tough loyal mercenary

Wash - Played by Alan Tudyk
Humourous easy going pilot.

Kaylee - Played by Jewel Staite
Talented and enthusiastic doctor.

Simon - played by Sean Maher
Spoiled, and opposed to the captains beliefs

Inara - played by Rebecca Gayheart
Sophisticated, elegant, a legalised prostitute

Book - Played by Ron Glass
Religious man, joined to spread the word.

River
Mentally disturbed girl with psychic powers

Jayne - played by Adam Baldwin
Ocaasional character, a male mercenary